wood burning
cooking an egg
making Kool Aid
water boiling
copper plating a nail
melting sand to make glass

are these chemical or physical changes​

Answers

Answer 1

These are physical change examples


Related Questions

Charles Darwin developed the theory of evolution. Scientific laws and theories are different from one another. Which of the following best describes the differences between scientific laws and theories?

Answers

Answer:

C

Explanation:

IM BiuLt  DIFFRENT

The coloration of fishes is due to special cells called
Group of answer choices

chlorophyllcytes

pigmentacytes

chromatophores

coloration cells

Answers

Answer: chromatophores

Explanation:

The coloration of fishes is due to special cells called chromatophores. Chromatophores are referred to as the cells which produces color. They are seen in animals such as reptiles, fish,amphibians, and crustaceans.

On the other hand, mammals and birds, have a class of cells that is refered to as melanocytes for coloration. The main function of chromatophores is simply for camouflage.

How is editing the genetic code different from artificial selection?



A It enables humans to influence the inheritance of DNA

B It enables humans to directly change DNA

C It can only be used on animal DNA

D It is not yet possible to edit the genetic code

Answers

Answer:

Option B

Explanation:

Artificial selection is influencing of inheritance of any trait . in this limited options are given to allow a species to mate and produce offspring

In genetic code editing directly genes are edited.

Hence, option B is correct

All living things have DNA. What about DNA determines the type of organism it will become?
A) The arrangement of DNA
B) The size of a DNA molecule
C) DNA does not affect living things
D) No answer text provided.

Answers

the answer would be A. the arrangement of DnA
The answer to this question is A

The superior opening of the pelvic brim is called the..?

pelvic outlet

pelvic inlet

false pelvis

lesser pelvis

pelvic crest

Answers

False pelvis is the answer

Answer:

Hello There!!

Explanation:

I believe the answer is pelvic inlet.

hope this helps,have a great day!!

~Pinky~

What data did the purification stage produce? How did this data help identify the transforming substance? (SAVAAS Chapter 11.1 Identifying the Substance of the Gene)

Answers

Answer: The purification gave evidence of the identity of the transforming material, meaning that the possible transforming substance was narrowed down.

Explanation: Removing lipids and carbohydrates suggest that these are not the transforming materials and removing protein suggests that this is also not a transforming material.

What is a climatic table?​

Answers

Answer:

A climate graph displays yearly temperature and precipitation statistics for a particular location. Temperature (oC) is measured using the numbers on the left hand side of the chart. The average temperature for each month is plotted on the graph with a red dot and the dots are then connected in a smooth, red line.

How can we control the laser light show to stop it from hitting the crowd

Answers

Answer:

just turn it off

Explanation:

Using mirrors to reflect the lasers and “bounce” them to other sides of the room

please help me arrange this

Answers

1.Yellow

2.Blue

3.Pitch

4.Purple

5Green

Which option identifies the major method scientists use to share their research findings with other scientists?

(Select all that apply)


newspaper articles

peer-reviewed journals

conference presentations

Internet videos

Answers

peer reviewed journals

The option that identifies the major method scientists use to share their research findings with other scientists is peer-reviewed journals. The correct option is B.

What is peer-reviewed journals?

A scholarly publication is another term for a peer-reviewed publication. The peer-review process is used to ensure academic scientific quality by subjecting an author's scholarly work, research, or ideas to the scrutiny of others who are experts in the same field.

Peer review is intended to assess the validity, quality, and, in some cases, originality of articles submitted for publication.

Its ultimate goal is to protect scientific integrity by filtering out invalid or poor articles.

Peer review research is not particularly well-developed, particularly as part of the broader issue of research integrity also it frequently produces contradictory, overlapping, or inconclusive results depending on scale and scope and it appears to suffer from biases similar to the rest of the scholarly literature.

Thus, the correct option is B.

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The swimming reflex is the combination of 2 unique factors. First, when submerged, babies will reflexively stop breathing through their nose. Secondly, their high voice boxes mean that any water will go into their _____.

Answers

Answer:

Trachea

Explanation:

The laryngeal reflex occurs and it is present in babies after birth. When water occupies or enters the mouth, the laryngeal reaction is triggered. While your infant is underwater, the glottis and epiglottis shut, keeping water from penetrating the throat(larynx and pharynx) and establishing a watertight barrier to the lungs. This is so to prevent the aspiration of water into the lungs.

Before developing a forest management plan, the most important thing to know is the a. Soil b. Weather c. Wildlife d. All the above

Answers

Answer:

c

Explanation:

got it in class kick

Hemochromatosis is an inherited disease caused by recessive allele. If a woman and her husband, who are both carriers, have three children, what is the probability of all three children having a normal phenotype

Answers

Answer:

27⁄64

Explanation:

A recessive disease is expressed only when an individual carries two copies of the recessive allele (i.e., individuals must be recessive homo-zygous to suffer from the disease). In this case, both parents are carriers for hemochromatosis, i.e., both are heterozygotes carrying the defective allele, thereby the probability of having a child with a normal 'dominant' phenotype is 3/4, i.e., 3/4 individuals are expected to have an A_ genotype (1/2 AA + 1/4 Aa = 3/4), and 1/4 individuals are expected to have an aa genotype (where 'A' is the dominant allele and 'a' is the recessive allele associated with hemochromatosis). In consequence, the probability of having three children with the normal phenotype is 3/4 x 3/4 x 3/4 = 27/64.

For the following question, match the key event of meiosis with the stages listed below. I. Prophase I V. Prophase II II. Metaphase I VI. Metaphase II III. Anaphase I VII. Anaphase II IV. Telophase I VIII. Telophase II Centromeres of sister chromatids disjoin and chromatids separate.

Answers

Answer:

VII. Anaphase II

Explanation:

During metaphase II, fibers of the spindle apparatus drive chromosomes to the cell equatorial plane, where they line up. Sister chromatids are holden together until they reach Anaphase II, during which specialized enzymes break the bonds between chromatids and separate them. Each chromatid migrates to one of the poles. In telophase II, the new chromosomes are already in the corresponding poles, and the nuclear membrane forms again in each pole

Which of the following is NOT an
ecological effect of mining?
A. habitat disruption
B. loss of biodiversity
C. acid mine drainage
D. increased biodiversity

Answers

d is correct

..................

^_^

A segment of a DNA molecule has the base sequence ATGAAC. Write a shorthand structure for this segment and for its complementary strand, using the symbols D for deoxyribose and P for phosphate.

Answers

Answer: See attached picture.

Explanation:

DNA or deoxyribonucleic acid is the name for the molecule that contains the genetic information in all living things. This molecule consists of two strands that wind around each other to form a double helix structure.

The basic unit of nucleic acids are called nucleotides, which are organic molecules formed by the covalent bonding of a nucleoside (a pentose which is a type of sugar and a nitrogenous base) and a phosphate group. So each nucleotide is made up of a pentose sugar called deoxyribose, a nitrogenous base which can be adenine (A), thymine (T), cytosine (C) or guanine (G) and a phosphate group.

What distinguishes one polynucleotide from another is the nitrogenous base, and thus the sequence of DNA is specified by naming only the sequence of its bases. The sequential arrangement of these four bases along the chain is what encodes the genetic information, following the following criterion of complementarity: A-T and G-C. So the sequence of these bases along the chain is what encodes the instructions for forming proteins and RNA molecules. In living organisms, DNA occurs as a double strand of nucleotides, in which the two strands are linked together by connections called hydrogen bridges.

The chemical convention of naming the carbon atoms in the pentose nucleotide pentose numerically confers the names 5' end and 3' end ("five prime end" and "three prime end" respectively). The 5'-end designates the end of a DNA strand that coincides with the phosphate group of the fifth carbon of the respective terminal deoxyribose. A phosphate group attached to the 5'-end allows the ligation of two nucleotides; for example, the covalent bonding of the 5'-phosphate group to the 3'-hydroxyl group of another nucleotide, to form a phosphodiester bond.

The lipases catalyze the hydrolysis of fats and other carboxylic acid esters. The lipases illustrate the fact that:

Answers

Answer:

Lipase is an enzyme that helps in the catalysis of the hydrolysis of fats and other carboxylic acid esters. Lipases act/functions according to the substrate molecule constituent and how similar the chemical linkages are.

Lipase action on fats and carboxylic esters which are different molecules but with similar chemical constituents and bonds explains enzyme action only some unique bonds in a compound.

Read the following scenarios carefully and explain how natural selection will occur in each.

Some worms eat at night (meaning they are nocturnal) and some worms eat during the day (meaning they are diurnal). Most birds eat only during the day, so they are only eating diurnal worms, due to the fact that the nocturnal worms are burrowing during this time. Each spring when the worms reproduce, about 500 offspring are born but only 100 of them live long enough to reproduce themselves.

Answers

Answer:

The correct answer is - Noctural worms have the advantage over diurnal due to the fact that the nocturnal worms are burrowing during the feeding time of birds.

Explanation:

Natural selection is the process in which organisms adapt according to environmental changes to increase their survival rate. Natural selection leads to natural changes in different organisms.

In this case, diurnal worms are forced by the natural selection here to adapt to the change if they want to survive. Here, natural selection works for the nocturnal and against the diurnal.

¿A qué se refiere la sexualidad libre de coerción y violencia?

Answers

Para las mujeres y las niñas, el derecho a controlar su propio cuerpo y su sexualidad sin ningún tipo de discriminación, coerción o violencia es fundamental para su empoderamiento. Sin derechos sexuales, no pueden realizar sus derechos a la autodeterminación y la autonomía, ni pueden controlar otros aspectos de sus vidas. De hecho, son los intentos de controlar la sexualidad de las mujeres y las niñas los que dan como resultado muchos de los abusos de los derechos humanos que enfrentan a diario, incluida la violencia de género, el matrimonio forzado, la mutilación genital femenina y limitaciones en su movilidad, vestimenta y educación. , empleo y participación en la vida pública. Lo mismo ocurre con las lesbianas, los hombres gay, las personas bisexuales, las personas transgénero, las trabajadoras sexuales y otras personas que transgreden las normas sexuales y de género y que, como resultado, enfrentan un mayor riesgo de violencia, estigma y discriminación. Está claro: los derechos sexuales sustentan el disfrute de todos los demás derechos humanos y son un requisito previo para la igualdad y la justicia.

A nivel mundial, existe un gran debate sobre si definir los derechos sexuales y cómo hacerlo. IWHC cree que para superar algunas de las barreras políticas al reconocimiento, respeto, protección y cumplimiento de los derechos sexuales, necesitamos aclarar cuáles son.

IWHC, en colaboración con otras organizaciones líderes de derechos humanos y salud sexual, ha desarrollado la siguiente definición de trabajo de derechos sexuales:

Los derechos sexuales abarcan ciertos derechos humanos que ya están reconocidos en las leyes nacionales, documentos internacionales de derechos humanos y otros documentos de consenso. Se basan en el reconocimiento de que todas las personas tienen derecho, libres de coerción, violencia y discriminación de cualquier tipo, al más alto nivel posible de salud sexual; perseguir una vida sexual satisfactoria, segura y placentera; tener control y decidir libremente, y con el debido respeto a los derechos de los demás, sobre asuntos relacionados con su sexualidad, reproducción, orientación sexual, integridad corporal, elección de pareja e identidad de género; ya los servicios, educación e información, incluida la educación integral en sexualidad, necesarios para ello.

If the slope of a distance-time graph is steep, then the speed of the object must be

Answers

We’re is the picture

Please help it's urgent!
Most drinking water comes from rivers, lakes, or water underground. What step in the water cycle does drinking water come from?
A.
condensation
B.
collection
C.
precipitation
D.
evaporation

Answers

I think it is B-collection

Answer:

precipitation is the correct answer right

1
Water Hyacinth is an invasive species that humans have introduced to many parts of the world. It is a plant that fouts on water and
forms groups. It can grow very fast. Over time, water hyscinth can cover the surfaces of ponde, lakes, and rivers,
What will happen to a pond where weter hyacinth plants grow and spread?
The water flow in the pond will increase, which can cause new plant species to grow
B. The amount of water in the pond will increas, which can cause new plant species to grow
C. The sunlight reaching underwater plant species will decreases, which can cause the plants to do
D. The temperature of the water will decrease, which can cause other plant species to die
Roset
Next Question

Answers

Answer:

C

Explanation:

This is the probably the most logical and correct answer. As the water hyacinth cover the surface of the water, the aquatic plants in the water will not have enough light for photosynthesis.

Look at the graph of different types of vertebrates. Which evidence would support the relationships shown on this graph?
DA graph shows evolution of four animal groups: amphibians, reptiles, birds, and mammals. A graph shows evolution of four
animal groups: amphibians, reptiles, birds, and mammals. The y-axis is labeled Millions of years ago, starting with 300 millions
of years ago, and decreases by increments of fifty millions of years ago to end at zero. The first line is labeled amphibians. It
starts at 300 millions of years ago and goes to zero, present day. The next line starts at 250 millions of years ago. The line
splits at 225 millions of years ago and is labeled reptiles. At 200 millions of years ago, it splits into two lines labeled birds and
mammals. Each line ends at zero, or present day


Omg pls help!!! That would mean a lot!! I also shared the pic as well for help

Answers

Answer: If this is the image you are talking about, I am able to answer your question.

These are the answers to the question.

A. Birds and amphibians have no similarities in their amino acid sequences.

B. Reptile embryos are similar to birds but have no similarities with mammals and amphibians.

C. Mammals have more genes in common with birds than with amphibians.

D. Amphibians and mammals have similar traits that are not seen in reptiles and birds.

Explanation: C really just makes the most sense to me.  Compare answer C to what is in the picture and you will see what I mean.

Today is my last day, so have a great summer!

A graph shows evolution of four animal groups:

Amphibians, reptiles, birds, and mammals. The y-axis is labeled Millions of years ago, starting with 300 millions.

What are amphibians?

A cold-blooded vertebrate animal of a class that comprises the frogs, toads, newts, and salamanders. They are distinguished by having an aquatic gill-breathing larval stage followed (typically) by a terrestrial lung-breathing adult stage.

What are reptiles?

A vertebrate animal of a class that includes snakes, lizards, crocodiles, turtles, and tortoises. They are distinguished by having a dry scaly skin and typically laying soft-shelled eggs on land.

What are mammals?

A warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur. The secretion of milk by females for the nourishment of the young, and (typically) the birth of live young.

A. Birds and amphibians have no similarities in their amino acid sequences.

B. Reptile embryos are similar to birds but have no similarities with mammals and amphibians.

C. Mammals have more genes in common with birds than with amphibians.

D. Amphibians and mammals have similar traits that are not seen in reptiles and birds.

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What is an advantage to the type of circuit shown in the image to the left? A. The bulb closest to the battery is the brightest. B. If one bulb burns out, the others will stay lit. C. If one bulb burns out, the others will too.​

Answers

Answer:b

Explanation:

define biosorption??

Answers

Biosorption is a physiochemical process that occurs naturally in certain biomass which allows it to passively concentrate and bind contaminants onto its cellular structure.[1] Biosorption can be defined as the ability of biological materials to accumulate heavy metals from wastewater through metabolically mediated or physico-chemical pathways of uptake.[2] Though using biomass in environmental cleanup has been in practice for a while, scientists and engineers are hoping this phenomenon will provide an economical alternative for removing toxic heavy metals from industrial wastewater and aid in
Question:-

what is biosorption?

Answer:-

Biosorption is the ability of biological materials to accumulate heavy metals from wastewater through metabolically mediated or physico-chemical pathways of uptake.

hope this helps you...

state the role of alcohol in this investigation​

Answers

you didn’t state the investigation we need to apply the role of the alcohol in

Cardiogenic shock shock results when: The body loses an excessive amount of blood The body's blood vessels are dilated The left ventricle cannot pump enough blood to meet the body's demands Trauma results in temporary loss of the autonomic function of the spinal cord

Answers

Answer:

The left ventricle cannot pump enough blood to meet the body's demands

Explanation:

Cardiogenic shock is a problem that occurs when the heart cannot pump the adequate amount of blood to supply all organs. In this situation, the left ventricle, responsible for pumping oxygen-rich blood, cannot pump enough blood to tend the body's demands. This causes blood pressure to drop and oxygen in the tissues to be lacking. In addition, this situation can cause accumulation of fluid in the lungs. This is a very dangerous problem, being one of the main causes of myocardial infarction.

How many offspring would result from a
single bacterium in 8 hours if they
reproduce every 20 minutes? (hint: the
population doubles three times every
hour)

Answers

Answer:

16777216

Explanation:

(8*60)/20 = 24 time

2 ^ 24 = 16777216

plss helpp!!! ill give brainlest

Answers

Answer:

Prophase is first, Metaphase is second, Anaphase is third, and Telophase is last

Explanation:

hope this helps

have a great day

Answer:

1. Prophase

2. Metaphase

3. Anaphase

4. Telophase

Which species are the most vulnerable to fungal infections?
a. Animals
b. Reptiles
c. Humans
d. Plants

Answers

Answer:

It depends, those who have weak immunity get the infections fast.

Explanation:

The species that are the most vulnerable to fungal infections are plants but is variable depending on the type of infection.

What is a fungal infection?

Fungal infection is any type of disease caused by  species from the Fungi kingdom (e.g., Basidiomycota species).

Plants are really susceptible to these type of infections (i.e., fungi infections).

In conclusion, the species that are the most vulnerable to fungal infections are plants but is variable depending on the type of infection.

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What is a nonrenewable resource?A: a resource that only provides foodB:a resource that can only be replaced by humansC:a resource that can grow back in a short period of timeD:a resource that cannot grow back or be replaced HELP PLEASE its the last day of school:(( PLS HELP 50 POINTSTo find the amount of water that would fill the inside of an aluminum can, which of the following formulas would you use?SA = 2 B + PhV = lwhSA = 2 r 2 + 2 rhV = r 2h 20 POINTSWhich three mathematical achievements were made during the Gupta dynasty?A) the calculation of pi B) the recognition of prime numbersC)the idea of zero as part of a system of numbersD)the creation of Arabic numerals Add at least 2 ways people in this job use arts and music ( that job is a dancer btw) This question has two parts. First, answer part A. Then, answer part B.Part A: Read the lines from the poem The Wind."The wind is cold and strong and cruel.It tells me just what I must do.I wear my mittens and my hat.Well, I ask, now, wouldn't you?What comparison does the speaker make in these lines?The speaker compares the wind to himself.The speaker compares the wind to cold air.The speaker compares the wind to a person.The speaker compares the wind to mittens and a hat. Solve for x.0.5x+78.2=287 Marissa gives Larry a check made payable to cash in payment for a computer that she is buying from him. Larry then gives the check to his nephew, Gary Graduate, without indorsing it, as a graduation gift. Marissa then stops payment on the check because she claims that Larry breached the contract. When the check bounces, Gary makes a claim against Marissa for the amount of the check. Marissa responds that Gary cannot collect on the check since he is not a holder because Larry never indorsed the check to him. Which statement is true The Amazon Basin in south america receives daily rain while some parts of the Atacama desert have record of no rainfall.what are the reasons Freddy earned $7.95 an hour, and last week he worked for 20 hours. About how much money did he earn? Your friend is not feeling well. You want to know what's wrong. Fill in the blank in the following expression with the appropriate word(s).Qu'est-ce qui ne ____ ? Which is the correct way to calculate the area of a circle? Read the passage, then do as requiredMost of us have formed an unrealistic picture of life on a desert island. We sometimes imagine a desert island to be a sort of paradise where the sun always shines. Life there is simple and good. Ripe fruit falls from the trees and you never have to work. The other side of the picture is quite the opposite. Life on a desert island is wretched. You either starve to death or live like 'Robinson Crusoe', waiting for a boat which never comes. Perhaps there is an element of truth in both these pictures, but few of us have had the opportunity to find out. Two men who recently spent five days on a coral island wished they had stayed there longer. They were taking a badly damaged boat from the Virgin Island to Miami to have it repaired. During the journey, their boat began to sink. They quickly located a small rubber dinghy with food, matches, water and rowed for a few miles across the Caribbean until they arrived at a tiny coral island. There were hardly any trees on the island and there was no water, but this did not prove to be a problem. The men collected rain- water in the rubber dinghy. As they had brought a spear gun with them, they had plenty to eat.They caught lobsters and fish every day, and , as one of them put it ' ate like kings' ! When a passing tanker rescued them five days later, both men were genuinely sorry that they had to leave.Questions:1-Choose a suitable title for this passage. 2-According to the information given In the text, how the two men came to the desert island? And what did they do there ?3-If you were stuck on a desert island, and you have the chance to bring ( 3 items / things ) to help you survive in this island. What will you bring with you? And why?4-What would you change / or add in this text, if you are the author ?5-Can you summarize the text in two or three sentences?6-Think of another Ending for this story.7-If you got the chance to ask the author of this passage, one question, what would it be? how many liters of air pass through your lungs in an hour if each breath brings 1 liter of air into the body. ILL GIVE BRAINLIEST Given the diagram, which of the following must be true? NO LINKS PLEASEEEEEEE Use the table to predict the number of times you will spin 3 when you spin the spinner 100 times. -6y-18 this is really overdue and its hard for me so can someone help If you put $5,000 in an investment that earns 8% interest compounded continuously, how many years, rounded to the second decimal, will take it until you have $8,303.00? Do you prefer Sokeefe of Sofitz? (If you put Sokeefe I will mark you brainiest!!!!)NOW GO READ THE SERIES "KEEPER OF THE LOST CITIES"!!!!love you my CHICKEN NUGGETS!!!!!