What kind of features would you expect to find in a transitional
fossil between Ichthyostega and Eusthenopteron?

Answers

Answer 1

Answer:

hope that help you

Explanation:

Fossils or organisms that show the intermediate states between an ancestral form and that of its descendants are referred to as transitional forms. There are numerous examples of transitional forms in the fossil record, providing an abundance of evidence for change over time.


Related Questions

Define Law of Superposition

Answers

Answer:

law of superposition

Explanation:

law of superposition a major Principle of strattigphy string that within a sequence of layer of sedimentary rockthe oldest layer is ar the base and the layer are younger with ascending order in sequence

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Pleaseeee help!!! (psychology edge) Androgens and estrogens are hormones that impact the sexual response cycle. Write about the four phases of that cycle and explain how the two types of hormones are involved.

Answers

Answer:

Females and males each have some amount of the sex hormones, androgens and estrogens. In males however, androgens like testosterone is more dominant and in females estrogens like estradiol are more dominant. The hormones both affect the sexual response cycle. The sexual response cycle has four phases: desire, arousal, orgasm and resolution. The desire phase can last anywhere from a few minutes to hours and includes physical changes like an increase in muscle tension, heartbeats quickening, flushed skin, and an increased flow of blood to genitals. The arousal phase extends to the brink of the orgasm phase, during this phase the changes experienced in the desire phase are intensified along with blood pressure increasing. The orgasm phase generally only lasts a few seconds and is the climax of the sexual response cycle, some characteristics include: Involuntary muscle contractions and spasms, blood pressure, breathing, and heart rate at their highest point, a release of built up sexual tension, and flushed skin. During the resolution phase the body returns to normal, often a sense of wellbeing and fatigue is achieved. To begin the cycle a male need a certain amount of the androgen, testosterone, but high levels in females tend to lead to more sexual thought and desires, typically though, women have relatively low levels of testosterone. In women, estrogens, such as estradiol are more common. Estrogens are produced when a girl starts puberty and helps her reproductive cycle begin. A high level of estrogen in men can lead to a reduced sex drive, loss of hair, or trouble focusing, but a normal level in men is crucial to proper erectile function.

Explanation:

I just submitted this, i hope it helps :)

What action is observed when studying osmosis or diffusion

Answers

The answer is Diffusion

The smallest unit of life is a ,and all organisms have at least one.

Answers

Answer: A cell

Explanation:

Answer:

Cell

Explanation:

It just is. :/

What is symbiosis meaning?

Answers

Answer:

interaction between two different organisms living in close physical association, typically to the advantage of both.

Explanation:

Hope this helps :D

Answer:

It is the interaction between two different organisms that typically has an o advantage to each other.

Explanation:

An example could be the relationship between an anemone (Heteractis magnifica) and a clownfish (Amphiron ocellaris). It's example of two organisms benefiting the other- the anemone provides the clownfish with protection and shelter, while the clownfish provides the anemone nutrients in the form of waste.

what are the inputs for photosynthesis and where are they used?

Answers

Answer:

In terms of inputs, outputs and energy transformations, photosynthesis can be summarized as follows. Inputs - Sunlight as energy source, carbon dioxide and water. Processes - Chlorophyll traps sunlight; the energy is used to split water molecules; hydrogen from water is combined with carbon dioxide to produce glucose.

Explanation:

A species that is carried into a new location by people is called an an _________________ species. *

Answers

Answer:

invasive species

Explanation:

they ruin the natural habitat and are therefor invasive

A species which is carried into a new location by people is called an invasive species. An invasive species can damage the food chain of an ecosystem.

What is an invasive species?

An invasive species is an introduced species which becomes overpopulated and harms the environment into which it is introduced. Although most of the introduced species are neutral or beneficial with respect to other species, an invasive species adversely affect habitats and bioregions, which causes ecological, environmental, and economic damage.

Some of the examples of invasive species are Zebra mussels are native to the Black Sea and the Caspian Sea in Central Asia. Zebra mussels arrived in the Great Lakes of North America accidentally.

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27. A certain type of toad resembles tree bark with its brown color and rough skin. A certain type of frog, has a bright yellow-green color with red toes and smooth skin. How does the appearance of each organism most likely help them survive?​

Answers

Answer:

Frogs go brrrrr

Explanation:

If a brown toad is in a forest then it will be harder to spot. If a bright yellow-green colored frog were in the same forest, it would be much easier to spot. So their appearence helps them survive by being harder to spot and allowing them to live and avoid preadators.

Which of the following best compares the functions of the ovaries and the uterus? (1 point)

Embryos are formed in the ovaries and zygotes are produced in the uterus during fertilization.

Zygotes are fertilized in the ovaries and develop into fetuses in the uterus.

Eggs are produced in the ovaries and zygotes implant in the uterus.

Eggs are fertilized in the ovaries and mature in the uterus.

Answers

Answer:

C. Eggs are produced in the ovaries and zygotes implant in the uterus.

Explanation:

The egg cells are formed in the Ovaries through the process of Ovulation.  The sperm and the egg cell (ovum) fertilize together in the Fallopian Tubes or Oviducts. After fertilization, the zygote formed slowly moves to the uterus, and implants itself into the walls of the uterus. Then, it starts dividing itself into an embryo and later into a complete fetus.

construct a model of gas exchange that shows interactions among: air sacs (alveoli) of the lungs, capillaries, artery, vein, red blood cell, and body cell. Include the gases oxygen (O2) and carbon dioxide (CO2), as well as arterial blood and venous blood, in your model. All these structures must be labeled or annotated in your model.

Answers

Answer:

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

If you are building a dichotomous key and you have 10 species to identify, how many couplets should your key have?
A) 04
B) 05
C) O9
D) 10

Answers

Answer:

10

Explanation:

easch couplet presents the user with 2 alternatives and exclusive sets of character's.

10 couplets should your key have. If you are building a dichotomous key, and you have 10 species to identify. Hence, option D is correct.

What is dichotomous key?

A dichotomous key, a crucial piece of scientific gear, is used to discriminate between diverse species according to their visible traits. Users must choose one of two possibilities to answer a series of questions that make up dichotomous keys.

A dichotomous key in the identification of trees, for instance, would ask whether the tree has leaves or needles. The key then leads the user down one set of questions if the tree has leaves; if the tree has needles, a different set of questions is shown.

The three most prevalent types of dichotomous keys are nested, connected, and branched. Each sentence has the appropriate response written next to it in nested type.

Thus, option D is correct.

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A television works by transforming electrical energy into what other kinds of energy?
a) light thermal and sound
b) thermal chemical and solar
c) sound mechanical and electrical
d) light chemical and mechanical

Answers

Answer: It is A

Explanation: It is A because the television gives off light and sometimes that could heat up the tv and it is sound because obviously television makes sounds because of the volume :) hopefully that helps.

Option A, which is light heat and sound, is the right response. Electrical energy is converted into different forms of energy by a television to operate. Thermal energy, sound, and light are produced using this energy.

What is the first step of the mechanism ?

The power supply unit first changes electrical energy into alternating current (AC). The image tube, which has a vacuum and an electron gun, receives this AC after that. Electrical energy is transformed into thermal and optical energy by the electron cannon.

The thermal energy is subsequently lost while the light energy is focused onto the screen. The speakers produce the sound by transforming electrical energy into sound waves. The other choices are inaccurate because they do not adequately depict how a television converts energy.

Option B uses energy sources other than televisions, such as chemical and solar energy. The mechanical and electrical energy found in the television is included in Option C. Option D also uses chemical and mechanical energy, which a television cannot produce.

As a result, choice A is the right response.

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By looking at a plant, how can you tell if it is a cycad and not a palm?

Answers

As palms grow, leaves encircle the stem at the base and leave circular scars around the trunk. Alternatively, cycads have two rows of leaves along a stem that uncoil from the trunk. Generally, the trunk of a cycad is stocky, and they also have little or no branching.

Answer:

D. look for cones

Explanation:

Muslims and Persians stressed perfect __________ in their architectural designs so that each side of a building would look exactly the same as the others.
A.
angles
B.
slopes
C.
texture
D.
symmetry

Please select the best answer from the choices provided
A
B
C
D

Answers

Answer:

B

Explanation:

Answer: d

Explanation:

trust me i am musilam

What are the main ideas behind the cell theory? Check all that apply.

Answers

Answer:

all living things are composed of one or more cells the cell is basic unit of life and new cells arise from existing cells

Answer:

Cells are the basic unit of structure and function.

Cells come from other cells.

Cells make up all living things

Explanation:

Which systems interact to maintain homeostasis and send electrical signals through the body?

Answers

homeostasis is what the human body does to adapt and stay healthy in their environment

Why is newton's first law of motion considered a law and not a theory?

Answers

Answer:

Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

Which pancreatic digestive enzymes digest starches?

Answers

Answer:

pancreatic amylase completes the digestion of starches

Explanation:

begun in your mouth, to release molecules of maltose, while pancreatic lipase breaks down fats into fatty acids and monoglycerides.

Which of the following is NOT true about the digestive system?
It’s question 10

Answers

Answer:

10. D

Explanation:

As we age, the amount of fluid in our bodies begins to decrease. This means there are fewer water reserves available for your body to use as you get older. Lowered thirst response. Feeling thirsty is your body's way of letting you know you need water.

How can invasive species be prevented?

Answers

Answer:

The best way to fight invasive species is to prevent them from occurring in the first place. ... Verify that the plants you are buying for your yard or garden are not invasive. Replace invasive plants in your garden with non-invasive alternatives. Ask your local nursery staff for help in identifying invasive plants!

Explanation:

Explanation:

here is your answer

please write from it

Select the correct answer.


Which phrase best describes the image?

Answers

there is no image to see

Answer:

there is no image

Explanation:

Which is a component of cell theory?

Answers

Answer:

here are some points

Explanation:

A component of the cell theory is that all living things are composed of one or more cells. A component of the cell theory is that the cell is the basic unit of life.A component of the cell theory is that all new cells arise from existing cells.

What pathway provides the longest-lasting supply
of ATP?

Answers

Answer:

HERE IT IS....

Explanation:

Aerobic cellular respiration ......

Aerobic cellular respiration is the process that provides longest lasting supply of ATP. Explanation: In this pathway the oxygen is present in enough amount to carry out the long process. oxidative phosphorylation also provides a long lasting supple of ATP.

State the function of red blood cells.

Answers

Answer:

Red blood cells carry oxygen from our lungs to the rest of our bodies. Then they make the return trip, taking carbon dioxide back to our lungs to be exhaled.

Explanation:

They transport oxygen

Explanation:

1)It carry oxygen from our lungs to the rest of our bodies.

2)It attracts bacteria

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WILL MARK BRAINLY


According to the information in the article, could the increase in algae in the neighborhood lake be related to Sarah’s farm? Why or why not?

also lemme know if u saw the new mondo episode

Answers

Answer: An increase in the algae in the neighborhood lake could be related to Sarah's farm as a result of the use of fertilizer.

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Photosynthesis and cellular respiration are two major processes of carbon cycling in living organisms. Which statement correctly describes one similarity between photosynthesis and cellular respiration?

A- Both occur in animal and plant cells.

B- Both include reactions that transform energy.

C- Both convert light energy into chemical energy.

D- Both synthesize organic molecules as end products.​

Answers

Answer:

B) Both include recations that transform energy.

The statement that describes the similarity between photosynthesis and cellular respiration is that both include reactions that transform energy.

PHOTOSYNTHESIS:

Photosynthesis is the process by which green plants obtain food using energy from sunlight.

CELLULAR RESPIRATION:

Cellular respiration is the process by which living organisms obtain energy (ATP) by breaking down food molecules in their cells.

Cellular respiration and photosynthesis are both metabolic processes that transform energy.

Cellular respiration transforms energy in food molecules to usable energy by cells while photosynthesis transforms solar energy to chemical energy.

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access the capabilities of animal and plant cell types owing the presence or absence of chloroplast and cell wall

Answers

Answer:At this point, it should be clear that eukaryotic cells have a more complex structure than do prokaryotic cells. Organelles allow for various functions to occur in the cell at the same time. Despite their fundamental similarities, there are some striking differences between animal and plant cells (see Figure 1).

Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

Explanation: pls give me brainest

Haploid plant cultures are got from​

Answers

Answer:

The tomato is the edible berry of the plant Solanum lycopersicum, commonly known as a tomato plant. The species originated in western South America and Central America. The Nahuatl (the language used by the Aztecs) word tomatl gave rise to the Spanish word tomate, from which the English word

Answer: obtained from pollen grains as they are haploid while leaves, root tip and buds are diploid.

Antimycin A Antimycin A is used in catfish farming: added to the water at 10 ppb, it kills small fish but does not harm catfish. Thus, small fish die out, and catfish get all the resources. When Antimycin A is added to isolated mitochondria, NADH and succinate both accumulate. However, if ascorbate, an artificial redox mediator that transfers electrons to cytochrome c, is added, oxygen consumption is still observed. Which step in the respiratory chain is antimycin A likely to inhibit (1 pt)

Answers

Answer:

Inhibits electron transport chain in mitochondria.

Explanation:

Antimycin A inhibits electron transport chain which leads to the complete halt of electron transport in mitochondria. due to this inhibition of electron transport chain in mitochondria leads to the killing of the fishes except catfish and so the catfish increase in population due to more resources and no competition. this Antimycin A is highly toxic for fishes and kill all fishes if used at the amount of 10 ppb.

HIV can paralyses the immune system of a person infected by the virus.
Explain why.​

Answers

Explanation:HIV attacks a specific type of immune system cell in the body. It's known as the CD4 helper cell or T cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections. When HIV is left untreated, even a minor infection such as a cold can be much more severe.

Because HIV can hide inside of cells

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