Theoretically, what was the first marine mammal?

Answers

Answer 1

Answer:

The pakicetids were digitigrade hoofed mammals that are thought to be the earliest known cetaceans, with Indohyus being the closest sister group. They lived in the early Eocene, around 50 million years ago.


Related Questions

How did the temperatures in the nebula affect
development of planets within the disks?

Answers

Answer:

because they were rocky dry and cold because nebula had these characteristucs

Explanation:

What is chromosomes?

Answers

Answer:

attached image to help u

Explanation:

A chromosome is a long DNA molecule with part or all of the genetic information.

what is transpiration caused by​

Answers

respiration is caused by the presence of chlorophyll in the plants and plenty of sunshine that leads to excessive loss of water in the plants

Transpiration is the loss of water from the plant through evaporation at the leaf surface. ... Transpiration is caused by the evaporation of water at the leaf–atmosphere interface; it creates negative pressure (tension) equivalent to –2 MPa at the leaf surface. Transpiration happens when plants release water vapor from tiny holes, called stomata, in their leaves. ... Transpiration increases because at warmer temperatures plants open up their stomata and release more water vapor. Humidity – If the air around the plant is too humid, the transpiration and evaporation rates drop. Transpiration is the evaporation of water from plants. It occurs chiefly at the leaves while their stomata are open for the passage of CO2 and O2 during photosynthesis. ... But air that is not fully saturated with water vapor (100% relative humidity) will dry the surfaces of cells with which it comes in contact. Transpiration is the evaporation of water from plants. It occurs chiefly at the leaves while their stomata are open for the passage of CO2 and O2 during photosynthesis. ... This transpired water must be replaced by the transport of more water from the soil to the leaves through the xylem of the roots and stem. Transpiration is the process in which plant roots absorb water and then release the water in the form of vapour through the leaves. Transpiration is an important factor in the water cycle as it is one of the major sources of water into the atmosphere. Definition of Transpiration: Transpiration is the process of water movement through a plant and its evaporation from aerial parts especially from leaves. Its Type: Cuticular Transpiration. Lenticular Transpiration. Stomatal Transpiration. The water eventually is released to the atmosphere as vapor via the plant's stomata — tiny, closeable, pore-like structures on the surfaces of leaves. Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapor by leaves is known as transpiration.

Which of the following is the process by which energy
bounces off a surface? *

O radiation

O warming

O absorption

O reflection


*please help i’ll give 30 points

Answers

D- Reflection

I hope I helped!

Which statement is true about the cell pictured...!!!

Answers

it is a fiborblast c

Another term for the cheek bone is the

Answers

Answer:

it has two names, the malar bone and the zygomatic bone

Explanation:

What are sections of DNA that produce the proteins which control the characteristics of an organism?
O genes
O traits
ο ο ο ο
RNA
O alleles
1
2
2.
3

Answers

Hello!


I think the right answer alleles


Hope this helps!

-Zee

Answer:

Genes

Explanation:

The answer is the first option or "genes." Genes are the section of DNA that produces proteins for the body. Genes also many different characteristics of an organism because they contain information, common example of genes at play would be gender identification. You can even inherit diseases or be at more of a risk for certain diseases because of your genes and the information you inherit from your parents.

Hope this helps.

What are the most abundant elements dissolved in ocean water?

Answers

Answer:

The elements hydrogen and oxygen are the most frequent in the oceans since they are largely made up of water.  While the salt in ocean water also contains sodium and chlorine.

Explanation:

What are the openings (pores) called that allow these molecules to enter leaves? What molecule enters the plant through the roots?

Answers

Answer: Stomata

Explanation:

Stomata are pores in the leaf that allow gas exchange where water vapor leaves the plant and carbon dioxide enters.

Who attempted to assess intellectual strengths by measuring muscular power, sensory acuity, and body proportions?.

Answers

Answer:

Francis Galton

Explanation:

What is best described as the energy of motion?​

Answers

Answer:  Kinetic energy

Explanation:

Kinetic energy is the energy of motion. All moving objects have kinetic energy. When an object is in motion, it changes its position by moving in a direction: up, down, forward, or backward.


Which sphere, regarding carbon, would be most immediately affected by a decrease in sunlight?



A.Atmosphere
B.Biosphere
C.Geosphere
D.Hydrosphere

PLZ ANSWER!

Answers

Biosphere will be affected
But don’t copy in exam or u will suffer later
Mark me as brainliest

All the ecosystems on Earth are collectively referred to as the biosphere. Therefore, it comprises both live things and inanimate objects, such as sunshine and water. Thus, option B is correct.

What is the role of sunlight in biosphere?

Photosynthesis is a process that organisms like plants, algae, and cyanobacteria used to turn carbon dioxide and water into organic molecules like carbohydrates.

The primary source of organic matter in the biosphere is this mechanism.

The sun powers the biosphere. This is so because the biosphere depends on the sun for its source of energy.

The compounds known as photosynthetic pigments catch the solar energy that powers the biosphere and use it to create organic molecules out of carbon dioxide and water.

Therefore, Biosphere regarding carbon be most immediately affected by a decrease in sunlight.

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How does smoking cause bladder cancer? Write a concise answer to this question using scientific language effectively

Answers

If you smoke for many years, these chemicals pass into your bloodstream and are filtered by the kidneys into your urine. The bladder is repeatedly exposed to these harmful chemicals, as it acts as a store for urine.

Smoking irritates the bladder and can make IC symptoms worse. Incontinence (leaking urine) and Overactive Bladder (OAB), impact more than 33 million men and women. Smoking bothers the bladder and can cause frequent urination. It can also cause coughing spasms that can lead to urine leakage.

This can cause changes to the cells of the bladder lining, which may lead to bladder cancer.

unlike a eukaryotic cell, a prokaryotic cell lacks

Answers

Answer:

[tex]\huge\boxed{\sf Nucleus}[/tex]

Explanation:

Eukaryotic Cell:

Greek Word : "Eu" means "Good" and "Karyon" means "Nut" which means that they have a Nucleus.

Prokaryotic Cell:

Greek Word : "Pro" means "Before" and "Karyon" means "Nut" which means that they lack Nucleus.

Difference:

The main difference between both is of a "Nucleus".

Hope this helped!

~AnonymousHelper1807

If a cell does not pass a checkpoint it may commit what, programmed cell death

Answers

Answer:

If the checkpoint mechanisms detect problems with the DNA, the cell cycle is halted, and the cell attempts to either complete DNA replication or repair the damaged DNA. If the damage is irreparable, the cell may undergo apoptosis, or programmed cell death 2.

hope this helps :)

are limiting factors biotic or abiotic

Answers

Answer:

Limited factors are more likely to be biotic because like food, mate and competition with other organisms for resources.

Explanation:

celcia diease is a condition that prevents people from eating food products that contain glunten. Gluten is protien compound found in some foos such as whaet products. For people with celiac disease,a protein in gluten interferecs with the absorption of variuos nutrients, minerals, and vitamins. which body system is responsible for breaking down gluten

Answers

My Answer:

Small intestine. This 23-inch long intestine is essential during the digestion process. If it is damaged by gluten consumed by someone with Celcia, it will misfunction and become impaired which can lead to complications.

In the above diagram of an animal cell, what is the name of structure 3?

Answers

Answer:

nucleus this sonorous the action of the cells

Answer:

a- nucleus

Explanation:

brainliest please

and have a great day!

A test area of a urine reagent strip is impregnated with only sodium nitroprusside. This section will react with:

Answers

If the test area of ​​a urine dipstick was impregnated with sodium nitroprusside only. This section will react as a false positive.

How to read urine tape?

To properly assess pyuria, the tape needs to be in contact with the urine for 30 seconds to 1 minute. False-positive results occur with contaminated specimens, trichomonas infection, and drugs or foods that make the urine red.

Sodium nitroprusside is a potent vasodilator for parenteral administration with rapid action and short duration, being very effective in hypertensive emergencies and in the treatment of patients with acute decompensated heart failure.

With this information, we can conclude that if the test area of ​​a urine dipstick were impregnated with only sodium nitroprusside. This section will react as a false positive.

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People with free earlobes don't have any advantages or disadvantages compared to people with attached earlobes. This is an example of a ____________ mutation.

Answers

Answer:

It is an example of Genetic mutation

Hope this helps! :)

Answer:

People with free earlobes don't have any advantages or disadvantages compared to people with attached earlobes. This is an example of a genetic mutation.

Explanation:

I hope this helps, love you.

Which statement may plausibly explain type II diabetes, but not type I diabetes?​

Answers

The statement that may explain type II diabetes is that a protein that is normally activated by the insulin receptor does not perform its function. That is option C.

Causes of type II diabetes

Diabetes mellitus is a metabolic disorder that occurs due to the inability of the body cells to utilize the insulin produced as seen in type II diabetes or the inability of the pancreatic cells to produce insulin in enough quantity.

In type II diabetes, there is presence of insulin in the bloodstream of the patient but the body cells are not able to make use of it to metabolize glucose.

This is because when the protein that is activated by insulin receptor fails to function, problems with insulin signalling can occur which impairs the proper management of glucose levels in the blood.

Therefore, the statement that may explain type II diabetes is that a protein that is normally activated by the insulin receptor does not perform its function.

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If green (G) is dominant and yellow (g) is recessive. What phenotype (color) would be produced by each of the following genotypes?


GG, ______, Gg, ______, gg, _____.


What is the probability that a family will have a female child?

Answers

Answer:

See below.

Explanation:

GG = greenGg = greengg = yellow

P (female child) = 1/2

An object with a density_____
1.0 g/mL will float in water.

Greater than
Less than
Equal to

Answers

An object with a density GREATER THAN

If light color is a recessive trait and the trees stay dark forever, could the light colored moths eventually become extinct? Why or why not?

Answers

Answer:

The light moths could become extinct eventually

Explanation:

If trees stay dark forever the light moths are easier to prey upon and eventually negative selection pressure will decrease the population of light moths until it is virtually nonexistent.

For a real life case of this, look into pepper moths and the Industrial Revolution.

If the light-colored trait is truly recessive, the moths may still carry the gene and could reappear in future generations.

What is a recessive trait?

A recessive trait is a genetic characteristic that is only expressed when an individual inherits two copies of the recessive gene, one from each parent. In other words, a recessive trait is only observable when the dominant version of the gene is absent.

For example, if a person inherits a dominant brown-eye gene from one parent and a recessive blue-eye gene from the other parent, they will have brown eyes, as brown is the dominant trait. However, if both parents pass on the recessive blue-eye gene, the individual will have blue eyes, as there is no dominant gene present to override the recessive gene.

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How do living things use matter such as carbon, nitrogen, phosphorus and water?

Answers

Answer:

Every living organism is made up of carbon, nitrogen, and phosphates. Nitrogen and carbon are found in amino acids which make up proteins. Phosphates make up DNA and ATP.

Explanation:

Karissa is conducting an experiment on the amount of salt that dissolves in water at different temperatures. She repeats her tests several times using the same procedure. What can Karissa do to further increase confidence in the results of her experiment?

Answers

Answer:

She could time how long it takes for each amount of salt dissolves in the waters. (as well as keep each amount of salt the same if she was not doing that already.)

Explanation:

This way, she could observe which water is best for dissolving solvents and which is most affective in the shortest amount of time. If she was not timing how long it takes for salt to dissolve in different temperatures of water, then the experiment may as well have been useless unless there is somehow a different objective.

Answer:

she could make sure the experiment follows a specific procedure that allows other scientists to produce the same findings

Is oryza sativa autotroph or heterotrophic

Answers

Answer:

Oryza sativa(rice) is an autotroph

Explanation:

Oriza sativa is the scientific name for rice.And rice is a plant and majority of all plants are autotrophs. Which means they contain the organelle chloroplast which is responsible for making their food.

why are plants not used that much for medical purposes in the us?

Answers

Answer:

I think it's mainly because of the population of plants dying off. I also think it is because of the need for more complicated chemicals, etc.

Explanation:

Carbon is a common in _____ matter too in rocks and soil dissolved in seawater inside the earth' s mantle and the air ,as_________

Answers

air and it evaporates

different between barometer and anemometer​

Answers

Answer:

used to measure wind speed.

Barometer is used to measure atmospheric pressure.
Anemometer is used to measure wind speed and wind pressure.
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