In the circulatory system there is the distribution of oxygen to the body and in the respiratory system the gas exchange.
How is the respiratory and circulatory system of amphibians?Amphibians have three structures for breathing:
The lungsThe mucous membranes of the pharynx and mouthand The skin.The lungs are made up of two bags with no internal division. When still in the larval stage, they breathe through gills.
How does the circulatory system of amphibians work?Amphibians have a dual circulation, meaning the blood passes through the heart twice to complete the cycle. The blood reaches the heart, travels towards the lungs, returns to the heart and only then is carried to the body.
Whit this information, we can conclude that In the circulatory system there is the distribution of oxygen to the body and in the respiratory system the gas exchange.
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During which year was the worst flu pandemic?
A. 2009
B. 1969
C. 1918
D. 1957
Answer:
C
Explanation:
Answer:
1918
Explanation:
Two parents, both with brown eyes, have four children. One child has brown eyes, like his parents, but the other three all have blue eyes. One of the children has been learning about genetics in science class and knows that brown eyes are dominant to blue eyes in humans. The student developed the following model of a Punnett square to predict the genotypes of his parents and his siblings.
Based on his model, the student claims that only one of the four children should have blue eyes. Which of the following explanations best describes why the Punnett square does not model the traits in the student’s family? (DOK 3)
Answer:
Punnett squares are not exact answers, they are only used to predict traits.
A.
The student is forgetting that a Punnett square is used to predict the outcomes of a genetic cross. The actual results do not always match up to the predicted outcomes.
How does the population growing negatively impact earth
Well as the population grows, our resources start to decrease. More resources are wasted every single day of our lives and we still keep digging them all out, what makes it worse is, since animals keep going endangered, humans keep coming and coming and if it keeps happening we will have no animals. Not to mention people are burning forests, the things we need to breathe.
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How is Sexual Reproduction is more successful than sexual reproduction
Answer:
The offspring of sexually reproducing organisms are all genetically unique. Because of this, sexually reproducing organisms may have more successful survival of offspring in environments that change than asexually reproducing organisms, whose offspring are all genetically identical.
Explanation:
Looked it up. I'm sorry if it's wrong.
Which if the following is the most commercially successful fiber, responsible for about half of all fiber production in the world? *
1 point
Cotton
Rayon
Silk
Polyester
Answer:
The correct answer is - polyester.
Explanation:
Polyester is a synthetic, petroleum-based fiber that is used more than any other fiber due to its cost-effectiveness, easy to produce, and able to spun together with other natural and synthetic fibers like cotton, silk, and rayon.
Polyester is the commercially most successful fiber as it has more than 51 percent market share approximately which is more than any other fiber and produced more than half of all fibers.
Which of the following is NOT an example of mechanical weathering?
A.A large rock splits due to ice wedging.
B.Oxidation causes rust on the rock.
C.Moving water causes abrasion as rocks collide with one another and break apart.
D.Plant roots grow in the crack of a rock.
Which statement best summarizes how the light-dependent reactions and light-independent reactions (Calvin cycle) work together during photosynthesis
The light-dependent reactions capture energy and the light-independent reactions use that energy to make glucose
The light-dependent reactions capture energy and the light-independent reactions use that energy to make ATP
The light-dependent reactions take in glucose (food energy) and the light-independent reactions use the glucose to make ATP
The light-dependent reactions capture bees and the light-independent reactions blend those bees up into golden cheddar mac and cheese... watch
out for the stingers though
The light-dependent reactions take in glucose (food energy) and the light-independent reactions use the glucose to make energy in the form of
sunlight
The light-dependent reactions capture energy and the light-independent reactions use that energy to make glucose
The energy captured in the light-dependent reactions is stored in ATP and NADPH and is used in Calvin's cycle to fixateCO2 in order to synthesize glucose
What is the probability of short beaks in the offspring of the cross show above
Answer:
8/16 or 1/2
Explanation:
This question is a dihybrid cross involving two genes, one coding for feather color and the other for beak length. The alleles for green feathers (G) and long beak (L) are dominant over the alleles for yellow feathers (g) and short beak (l).
According to this question, a male with genotype GGLl was crossed with a female with genotype Ggll. The following combination of gametes is produced by each parent:
GGLl - GL, Gl, GL, and Gl
Ggll - Gl, Gl, gl and gl
Using these gametes in a punnet square (see attached image), the following offsprings in the following proportions will be produced.
Green feathers, long beak (GGLl, GgLl) = 8/16 or 1/2
Green feathers, short beak (GGll, Ggll) = 8/16 or 1/2
Hence, the probability of short beaks (ll) in the offspring of the cross is 1/2.
Metamorphic rocks are a bit harder to identify because they can share traits with the other rock types. Again, thinking about the formation process can help. Metamorphic rocks have been heated and squashed. This can lead the minerals in them to line up, creating ribbon-like layers called bands. These rocks are called foliated metamorphic rocks. You can see these bands in gneiss. If a metamorphic rock has fossils, you know it was formed from a sedimentary rock. Because of the heat and pressure, the fossil will be hard to recognize and out of shape.
Which of the following best describes foliated metamorphic rocks?
A
There are easily recognizable fossils.
B
The rock has ribbon-like layers of bands.
C
They have crystals like igneous rocks.
D
Different sized sediments can be see
Answer:
b
Explanation:
the fourth sentence in the passage: "This can lead the minerals in them to line up, creating ribbon-like layers called bands."
Dark and light bands may alternate due to the separation of mafic (dark) and felsic (light) minerals. Having different grain sizes in the same mineral can also result in banding. Thus, option B is correct.
What are the ribbon layer present in the rock?Under the surface of the earth, metamorphic rocks are formed. The extreme heat and pressure cause them to alter. Their layers resemble ribbons. Some of them are covered in bright crystals.
Under the earth's surface, metamorphic rocks are created as a result of the transformation brought on by extreme heat and pressure (squeezing).
These processes produce rocks that frequently have layers that resemble ribbons and may have glittering crystals on their surface that were created by minerals slowly growing over time.
Therefore, This can lead the minerals in them to line up, creating ribbon-like layers called bands
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What are the important considerations during the classification of nematodes?
Answer:The Nematoda, similar to most other animal phyla, are triploblastic, possessing an embryonic mesoderm that is sandwiched between the ectoderm and endoderm. They are also bilaterally symmetrical: a longitudinal section will divide them into right and left sides that are symmetrical.
Explanation:
Which statement describes how heat flows from the coffee to the part of the spoon in the coffee?
Heat flows from the coffee to the spoon through radiation.
Heat flows from the coffee to the spoon through convection.
Heat flows from the coffee to the spoon through conduction.
Heat flows from the coffee to the spoon through radiation, convection, and conduction.
Answer:
C. Heat flows from the coffee to the spoon through conduction.
The heat movement known to move from one area to elsewhere has been called heat transfer. Thermal conduction allows the coffee's heat to reach the spoon. Thus, option C is correct.
What is thermal conduction?A type of heat transfer called thermal conduction occurs when heat flows from one spot to some other place due to the disparity in temperatures between the bodies.
When a body is subjected to thermal conduction, heat energy is dissipated from the body towards the colder or less heated objects. Because the spoon and coffee are at different temperatures, the heat from the coffee is passed to the spoon through conduction.
Therefore, thermal conduction is the process through which the coffee heats the spoon in the cup.
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I'm just not quite sure.
Answer:
Answer is option (c) because after meiosis cell possess only ones set of chromosome i.e (n)...... 23 chromosome......
how does an organism reproduce by budding
Provide an
example of how energy from the sun affects patterns of movement in the ocean.
Answer:
The sun's heat evaporates some water and raises the concentration of the salt, causing the water to be more dense. Or it could be the gravitational pull of the sun from Earth, just like how the moon affects tides. I hope this helps you :)
Explanation:
The chemical equation of cellular respiration contains information about?
a. the relative amount of products and reactants.
b. the formation of glucose.
c. the intermediate reactions needed to break down glucose.
d. the environment in which cellular respiration occurs.
The chemical equation of cellular respiration comprises information regarding the relative amounts of products and reactants.
• The process, which takes place within the mitochondria of all the organisms is termed cellular respiration. In this process, the simple sugars are dissociated into water and carbon dioxide and release energy in the form of ATP.
• A chemical reaction is a procedure in which one or more components, that is, the reactants get transformed into one or more different components called the products.
• The substances, which start the reaction are called reactants, while the ones that get produced in the reaction are called products.
• The association between the reactants and products in a chemical reaction can be signified with the help of a chemical equation.
Thus, the chemical reaction of cellular respiration comprises information regarding the relative amount of products and reactants.
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Please answer ASAP! 50 points
Assuming that species 1 is the ancestral species of the group,
(a) What type of mutation do you observe in species III? (1pt)
(b) A change in DNA may cause a change in the protein coded by that specific DNA. Give the main steps of transcription (make sure to mention the antisense strand and the enzyme involved) (3 pts)
(c) In Eukaryotes, the molecule produced by DNA must be modified in order to leave the nucleus. Explain TWO of those modifications. (2 pts)
Cells in one type of body tissue are identical to cells in other types.
Agree or disagree?
What part of a tree conducts electricity when hit by lightning?
Answer:
In most trees, the area just under the bark layer contains moisture in the form of sap and water. And since water is a better electrical conductor than wood, lightning striking a tree tends to travel just underneath the bark.
What is a way that society controls science?
Answer:
I think it's D. Governments give research funding.
which of these factors will affect a population regardless of the populations density ? PLEASE HELP
Answer:
Density independent factors affect populations regardless of their size. Examples are winter, drought, forest fires. These factors are mostly abiotic (non-living). Predation affects population size.
disease
The factors that will affect a population regardless of population density is flooding. The correct option is C.
What is population?A population is the entire group about which you want to draw conclusions. A sample is the specific group from which you will collect data.
The sample size is always less than the total population size. A population for this research does not necessarily refer to people.
A population is a subset of individuals from one species that live in a specific geographic area and interbreed in reproducing species. Some species' geographic boundaries are easy to establish, while others are more difficult.
Population change is influenced by three factors: birth rate, death rate, and migration. Though one or two of these factors may have an impact on a population in a specific area, all three have an impact on population change.
Thus, the correct option is C as the population can be get affected by flooding without regarding their density.
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Answer these 3 please thanks
HURRY PLEASE I NEED A PARAGRAPH. Describe how cell membranes are selectively permeable.
Explanation:
Cell membranes are selectively permeable. Some solutes cross the membrane freely, some cross with assistance, and others do not cross at all. A few lipophilic substances move freely across the cell membrane by passive diffusion. ... Large molecules do not cross intact cell membranes, except in certain special cases.
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Which plate boundary and movement commonly create volcanoes that can result in the development of habitable islands? Explain how islands can be created by plate tectonics. The answer is this but I need the CONVERGENT. Can you provide the definition of a convergent boundary?
Answer:
convergent boundaries are boundaries that come together
Explanation:
What process is the fastest at releasing oxygen into the atmosphere
Answer:
i believe it would be photosynthesis
Explanation:
How would your body be affected if your pituitary gland did not work properly
Answer:
For example, if the pituitary gland does not produce enough growth hormone in a child, they may have a permanently short stature. If it doesn't produce enough follicle-stimulating hormone or luteinizing hormone, it might cause problems with sexual function, menstruation, and fertility.
Explanation:
Answer:
c
Explanation:
Describe skin cells and their function
Some organisms consist of one cell. Other organisms consist of multiple cells. Which of the following is true of cells in a multicellular organism?
All cells have the same function.
Every cell has a different function.
Different types of cells have the same function.
Different types of cells have different functions.
A habitat is the role of a population in its community, including its environment and its relationship with other species? True or False
Answer:
True
Explanation:
Active cells such as muscle cells likely contain
Muscle cells contain actin and myosin protein filaments that slide across each other to create a contraction that modifies both the cell's length and shape. Muscles act for strength and movement