Answer:
The chemical equation which is a model of synthesis reaction is option B
B. H₂O + CO₂ ---> H₂CO₃
Explanation:
A synthesis reaction is a type of chemical reaction in which two or more reactants combine to form a single product.
A synthesis reaction is illustrated below:
A + B ----> C
In the illustration above, A and B are two chemical substances which serve as the reactants in the chemical reaction. A and B combine with each other to form a product C.
Common synthesis reaction include:
1. The reaction of sodium with chlorine to produce sodium chloride: Na + Cl ---> NaCl
2. The synthesis of Nitrogen (iv) oxide from nitrogen (ii) oxide and oxygen: 2NO + O₂ ---> 2NO₂
3. The synthesis of sulfur trioxide from sulfur dioxide and oxygen: 2SO₂ + O₂ ----> 2SO₃
From the given chemical reactions, the model of a synthesis reaction is option B
H₂O + CO₂ ---> H₂CO₃
How is the Earth of the 22nd century
different from the Earth of today?
Answer:
Earth in the 22nd ceuntry didn't had Electronics they had weapons, slavery, dynastys, and many more things that barely exist today
D starch
Blood glucose levels can become high following the digestion of carbohydrates.
Which of the following can be digested to release glucose?
A both fructose and sucrose
B both fructose and galactose
C both galactose and lactose
D both lactose and sucrose
Answer:
The answer is A fructose and sucrose
Explanation:
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Someone please help me answer this, I need help
The movement of water across a membrane does not require a concentration gradient.
A. True
B. False
Answer:
false
Explanation:
because it is osmosis any liquid (water) can move through the membrane withought energy
Answer:
False
Explanation:
True or False: Herbivores would be able to survive without the sun
True
False
Answer:
false. herbivores depend on the sun because the plants depend on the sun. the plants would not be able to survive without the sun, therefore neither would the herbivores.
Explanation:
Answer:
For how long?
If you are talking about a short while then yes
but if you are talking about years then no
Explanation:
plants need sunlight for photosynthesis, therefore if the sun disappeared, then plants will slowly die out, increasing competition in herbivores and slowly starving them
2. Which of the following statements is true?
D
A Cells don't need nutrients.
B Chloroplasts contain a cell's
genetic material.
C Cells grow and reproduce.
All nonliving things are made
of cells.
D
Answer:
Option C
Cells grow and reproduce
Describe what a sustainable ecosystem looks like with a real-life example
Answer:
The Appalachian Region in the southwestern United States, which is one of the most richly biodiverse regions in the world. Overall, cities that recycle & reuse basically exist in harmony with the surrounding environments are also considered sustainable ecosystems. A sustainable ecosystem is one where even when things are taken, nature still has enough to function and the ecosystem/area is healthy. But dealing with domestic, industrial, & agricultural waste is a growing environmental issue. That is NOT a sustainable ecosystem.
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Find the Perimeter of the figure below, composed of an isoceles trapezoid and one
semicircle. Rounded to the nearest tenths place
9
6
6
4
Answer:
9 is the correct answer
Explanation:
Eugene and Jenny are selling cookie dough for a school fundraiser. Customers can buy packages
of chocolate chip cookie dough and packages of gingerbread cookie dough. Eugene sold i
package of chocolate chip cookie dough and 10 packages of gingerbread cookie dough for a total
of $174. Jenny sold 4 packages of chocolate chip cookie dough and 2 packages of gingerbread
cookie dough for a total of $50. Find the cost each of one package of chocolate chip cookie
dough and one package of gingerbread cookie dough.
.
.
.
.
.
Eugene and Jenny are selling cookie dough for a school fundraiser. Customers can buy packages
of chocolate chip cookie dough and packages of gingerbread cookie dough. Eugene sold i
package of chocolate chip cookie dough and 10 packages of gingerbread cookie dough for a total
of $174. Jenny sold 4 packages of chocolate chip cookie dough and 2 packages of gingerbread
cookie dough for a total of $50. Find the cost each of one package of chocolate chip cookie
dough and one package of gingerbread cookie dough.
The blue cell in the cartoon would be classified as what type of cell?
A. prokaryotic
B. eukaryotic
Answer:
The blue cell in the cartooon would be calssified as prokaryotic.
The blue cell in the cartoon would be classified as prokaryotic cell.
What are the difference between of prokaryotic cell and eukaryotic cell ?Prokaryotic cell are single celled organism, its size varies from 0.2 μm – 2.0 μm while eukaryotic cell are multi-cellular organism and its size ranges from 10 μm – 100 μm in diameter.
Cell wall is present in prokaryotes but plant cell as an eukaryotic cell have cell wall; in Prokaryotes True Nucleus is absent while in eukaryotes true nucleus is present.
In prokaryotes Ribosomes are Smaller in size having 70s type, spherical in shape while in eukaryotes ribosomes are larger in size, 80s type and linear shaped in structure.
Circular type of DNA present in prokaryotes where as in eukaryotes DNA is Linear in shape; Mitochondria is absent in prokaryotes where as it is present in eukaryotes.
Learn more about prokaryotic cells, here:
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please help bio 3 question
please help bio 3 question
I gotchu!! ^v^The answer is: "aa" If both letters are lowercase then that means the trait is recessive, and since cystic fibrosis is recessive this is your answer.I apologize if i'm wrong // Your're welcome if i'm correct((-Side Note-)): If you don't mind can you pls mark my answer branliest?
Thank you and i hope you have a great day! ^v^3. How might polar bears population suddenly increase? How would this affect the ecosystem?
Please help me answer this question. I’ll give you brainliest.
6/2(1+2)=?
6-1 X 0 + 2 / 2 =?
Answer: 9 and 6
Explanation:
6−1x0+
2
2
=6+−1+1
Combine Like Terms:
=6+−1+1
=(6+−1+1)
=6
Plants play a role in this cycle by completing photosynthesis:
Answer:Plants don't eat food; they have to create it for themselves. They do this through a process known as photosynthesis. Photosynthesis uses water, carbon dioxide from the air and energy from the sun or another light source to create glucose or sugar. This glucose provides the energy the plant needs in order to survive
Explanation:
hii! i’ll give brainliest pls help
Answer:a or b not sure
Explanation:
what is the function of chromosomes
A- regulating the production of specific proteins
B- producing energy through metabolism
C- transmitting electrical signal through the body
D- controlling the rate of cellular division
water moving along the ground, into and including rivers
and streams.
is it
Transpiration
Infiltration
Percolation
Surface runoff
Answer:
surface runoff is the answer
In addition to the moon, artificial satellites also orbit Earth.
Which factor(s) must be taken into account to ensure that a
satellite keeps orbiting Earth rather than falling back to
Earth's surface?
Answer:
»Maximum escape velocity to keep them in the orbit.
»They should have a mass not greater than that of the earth.
Describe the trophic levels in a community
PLEASE PLEASE ANSWER FAST PLEASE
what are the most common c0vId vaccine myths and how did they start? Explain your answer.
Answer:
The most common myths are:
- C0vid2019 vaccines cause autism
- C0vid2019 vaccines may modify your DNA
- C0vid2019 vaccines are unsafe
Explanation:
The most common myths associated with C0vid2019 vaccines are:
1- C0vid2019 vaccines may cause autism: In 1998, Andrew Wakefield and colleagues published a controversial study in the Lancet where they suggested that the measles, mumps, and rubella (MMR) vaccine may cause autism in some children. However, it has been showed that this study was based on erroneous statements and therefore this publication was retracted.
2- C0vid2019 vaccine may modify your DNA: it has been suggested that vaccines based on viral vectors (e.g. adenoviruses) and mRNA vaccines may modify the DNA of cells. This statement is false because these technologies cannot alter the DNA sequence. These vaccines are based on the production of an mRNA sequence that is translated into a viral protein (spike protein) which triggers an immune response
- C0vid2019 vaccines are unsafe: some people believe that C0vid2019 vaccines are unsafe because they were developed quickly. However, this statement is false because all vaccines (including C0vid2019 vaccines) need to follow rigorous safety standards to be approved by governmental agencies (i.e., they approved all clinical trials).
Identify one solution that people around the world are doing to decrease our trash amount
Answer:
Use a reusable bottle/cup for beverages on-the-go
Use reusable grocery bags, and not just for groceries. ...
Purchase wisely and recycle. ...
Compost it! ...
Avoid single-use food and drink containers and utensils. ...
Buy secondhand items and donate used goods. ...
Shop local farmers markets and buy in bulk to reduce packaging.
CO2 is a product of cellular respiration. How do you think humans get rid of the CO2?
Answer:
They get rid of C02 through the lungs. CO2 is waste gas produced by cells of our body. It is passed through capillaries to the veins and to the lung through blood. Lungs remove CO2.
Explain how the greenhouse effect keeps our planet warm. Please use
the following terms, visible light, infrared waves, and absorption. (2 - 3
sentences)
Your answer
nswI
Which of the following is a health risk associated with a depleted ozone
5 points
layer? -
isole ain
Answer:
When the Sun's energy/ visible light reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth
Skin cancer, because it is the skin that is affected by the unhealthy rays from the sun that can penetrate when the ozone layer is depleted
Explain why an observer in New York State sees some different constellations in the night sky when Earth is at location A compared to when Earth is at location C.
Answer:
The Earth is Rotating to another location and shownig different groups of Stars
Explanation:
An observer in New York State sees some different constellations in the night sky when Earth is at location A compared to when Earth is at location C because of the continuous rotation of the earth on its axis.
What do you mean by Constellation?A constellation may be defined as a collection of stars that significantly form a recognizable and identifiable pattern in the sky mostly in the nighttime. These collections of stars are traditionally named after their apparent form or identified with a mythological figure.
According to the context of this question, when an observer in New York State sees some different constellations in the night sky when the earth is at location A, but the visualization by an observer may change when the earth is located at location C, this is because of the gradual and continuous rotation of the earth on its axis.
To learn more about Constellations, refer to the link:
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in comparing two species that look different, how could a comparison of the species genes contribute to an understanding of their evolutionary relationship? this is a written response pls help:(
Answer:
The more similar the base sequence of the DNA (their genes), the more closely related they will be!
Explanation:
Hope that helps!
PLEASE HELP WITH BIOLOGY!! WILL GIVE BRAIN!!
Answer:
ok
Explanation:
You are a pediatrician and have determined that a young patient is at risk for rickets. Outline
a treatment you would recommend to the child's parents and why you recommend that
course of action.
Answer:
The correct answer is - to get enough vitamin D.
Explanation:
Rickets is a condition that causes softening and weakening of the bones due to prolonged vitamin D deficiency. It takes place more in the children compared to adults.
This can be treated by incorporating Vitamin D rich foods into the diet and get vitamin D from sunlight. Sunlight helps in developing Vitamin D naturally. The patient should go outside and eat beef liver, fatty tuna, and other food rich in vitamin D and should take vitamin D supplements.
"Speaking of fossil fuels; the chart above shows the common uses for which fossil fuel?"*
Petroleum
Coal
Natural Gas
Nuclear
Answer:
coal
Explanation:
I need 20 characters so Im typing this in hope of filling the space
Genetic variation _____. Group of answer choices is created by the direct action of natural selection always arises in response to changes in the environment must be present in a population before natural selection can act upon the population tends to be reduced when diploid organisms produce gametes
Answer:
It must be present in a population before natural selection can act upon the population.
Explanation:
Genetic variation refers to the variations that exists in the DNA of the individuals. These variations are caused mainly by mutation and genetic recombination of the DNA. It helps in the process of evolution. Genetic variations helps in building the mechanisms of change that helps in the process of evolution. Genetic variation is caused highly because of process of sexual reproduction. The offspring exhibit various genetic variation.
I need help with a science problem!
Answer:
Convergent Boundary
Explanation:
Answer:
A
Explanation:
its kinda hard to see but i am sure its a if not i am sooooooooooooo sorry