1. Describe two pieces of evidence that whales have evolved from land mammals ​

Answers

Answer 1

Explanation:

In addition to the vestigial leg bones and the series of transitional species in the fossil record, there is physiological and genetic evidence.

The physiological evidence is that whales swim with a modified running motion. If they had been specially created in the sea, there is no reason to have this holdover from life on land to let them swim.

Evidence for a horizontal fluke comes from the muscle attachments to move that fluke. Muscles pull on bone when they contract. Therefore bones have little bumps (sometimes not so little) on them as they add bone to handle the mechanical force of the contractions. Flukes can be inferred by the placement and size of the bumps on the vertebrae where the muscles that move the fluke (tail) are attached. Flukes themselves are soft tissue, and thus do not preserve well. But the bumps on the bone show a clear preference for muscle attachments on the top and bottom of the vertebrae, and these bumps get larger as the muscles evolve to be larger to move the fluke. If there is any other explanation and another inference, creationists have not provided it.

There is also the position of the nostrils over the course of evolution.


Related Questions

what is hail stones?why is oxygen ​

Answers

Answer:

hailstones --> Hail is a type of precipitation, or water in the atmosphere. Hail is formed when drops of water freeze together in the cold upper regions of thunderstorm clouds. These chunks of ice are called hailstones. Most hailstones measure between 5 millimeters and 15 centimeters in diameter, and can be round or jagged.

i am sorry i can not answer the oxygen question because it is not all there.

Select the correct answer.
Peter is a farmer who owns a cow. Which of these is most likely to be a sign of illness in the cow?
OA
The cow eats too much grass on one specific day
ов.
He finds the cow lying down in the pasture,
The cow has an abnormal lump on her neck,
OD
The cow makes a noise when she is hungry
The cow grazes only in one corner of the pasture,

Answers

Answer:

finds the cows with a lump on his neck

Is lightning living

Answers

I don’t think light is living
no it is not living

What is the difference between mechanical digestion and chemical digestion?

Answers

Answer:

So, Mechanical and Chemical Digestion is the way of breaking down foods in the body. The difference between Mechanical and Chemical Digestion is, Mechanical Digestion involves the body's movement to make the food smaller and Chemical Digestion involves enzymes to break the food down.

Explanation:

Since Mechanical Digestion involves moving around to break the food down, you would get up and walk around a little to burn it to make it work and Chemical Digestion is just using the natural enzymes in the body to break food down.

Mechanical digestion is associated with the mouth. You mechanically chew the food and saliva (spit lol) breaks it down. Chemical digestion is in the stomach in which stomach acid breaks it down!

Brainliest please :3

What is the purpose of nitrogen-fixing bacteria?

Answers

Answer: The symbiotic nitrogen-fixing bacteria invade the root hairs of host plants, where they multiply and stimulate formation of root nodules, enlargements of plant cells and bacteria in intimate association. Within the nodules the bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development. brainliest?

Explanation:

Answer:

Within the nodules the bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development.

Explanation:

Please help
A plant shows incomplete dominance in size. A tall plant (TT) is crossed with a medium plant (Tt).

What percentage of the plants will be tall?

Answers

Answer:

100% of the plants will be tall

Explanation:

The dominate trait is present in every box

WILL MARK BRAINLEST OR WHAT EVER A segmented worm seen below is an invertebrate with what type of body symmetry?



Question 19 options:

Radial


Bilateral


Asymmetrical

Answers

wow thats tricky................  i think its asymmetrical or radial

Answer:

Bilateral

Explanation:

It is an living animal that has an even body.

My gardener removed all the flowers from my tulip plants. This will interfere with which system of the tulip plant

Answers

Answer:

The energy will go to producing more flower buds

Urgent!! Will give brainlist to best answer!!

The top ten most commonly eaten foods mostly include grains and other starchy plants.

True

False

Answers

Answer:

true

Explanation:

Carbohydrates can be divided into three main categories: sugar, fiber and starch.

Starches are the most commonly consumed type of carb, and an important source of energy for many people. Cereal grains and root vegetables are common sources.

BRAINIEST ANSWER:)))

I put oceans but I’m not sure

Answers

Answer:

It is in the form of glaciers.

Explanation:

Since, In a pack of ice, water is stored too much..*

Paragraphs 4, 5, and 6 discuss the transport of water in the coastal redwoods. Which of the following statements regarding the transport of water in trees is false?
(16.6 points)
A.
Water only moves in one direction in trees, from the roots to the needles.
B.
Water is pulled up the tree due to evaporation in the needles.
C.
The rate of water flow in a tree does not matter.
D.
It requires a lot of energy for the trees to move water.

Answers

the answer is B is the ander

9. What does energy efficiency mean?
A. How much useful work we can get from each unit of energy used
B. How fast the energy can be expended
C. The maximum amount of energy an appliance can use
D. The overall energy use that is tracked throughout time

Answers

Answer:

The answer is A

Explanation:

The diagram below represents an energy pyramid constructed from data collected from an
aquatic ecosystem. Which statement best describes this ecosystem?

A.The ecosystem is most likely unstable.
B.The herbivore populations will continue to increase in size for many years.
C.Long-term stability of this ecosystem will continue.

D.The producer organisms outnumber the consumer organisms.

Answers

D. The producer organisms outnumber the consumer organisms.

Energy pyramids are the models that show the flow of energy from the primary to the next level. From the energy pyramid, it can be said that long-term stability will be continued. Thus, option C is correct.

What are energy pyramids?

Energy pyramids are the representation of the energy levels and the primary producers and other consumers. The producers are the base of the pyramid followed by the primary consumers.

In an aquatic ecosystem, the algae are the primary producers that provide energy to plankton and act as primary consumers. These are get eaten by small fishes and large fishes. The number of consumers gets decreased as one rises to the upper level.

Therefore, option C. an aquatic ecosystem will have stability.

Learn more about the energy pyramid here:

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identify three reason it is important to protect Earth's land resources​

Answers

Answer:

Land conservancies preserve land for future generations, protecting our food and water supply, purifying our air, providing wildlife habitat, and strengthening our communities.

Explanation:

Hope that this helps you out! :)

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What is the vertebrate ancestor to all tetrapods?


sea stars

squid

annelids

jawless fish

Answers

Answer:

In a strict evolutionary sense, all tetrapods are essentially “limbed fish,” because their ultimate vertebrate ancestor is a fish. All tetrapods share a variety of morphological features.

Answer:

Jawless Fish

Explanation:

I took the Test

A synapse is the space between

Answers

Answer:

two nerve cells

Explanation:

hope this helps :)

Why is seed banks important ?

Answers

Answer:

protect ather hamfull and its save and clean

Explanation:

Seed banks protect and save plant genetic diversity, which is important for a number of reasons. These saved and viable seeds contain a treasure trove of useful genes that breeders can use for developing improved varieties of our major food crops

6. What is the relationship between amino acids, and proteins,
and DNA?

Answers

The genetic code is the relation between the sequence of bases in DNA (or its RNA transcripts) and the sequence of amino acids in proteins.

Why is drilling oil reserves in the Arctic National Wildlife Refuge (ANWR) controversial? A) The controversy is over removing more nonrenewable resources from an area that has been set aside for the ecological health of wildlife. B) The controversy is about how much oil is actually in the ANWR. C) The controversy is over the cost of drilling for and extracting oil, and whether the government will subsidize the oil industry. D) The controversy is among people who want to store nuclear waste in the area, oil companies that want to extract oil, and indigenous people who want to keep their hunting territories. E) There is no controversy about this area because it has already been preserved for wildlife.

Answers

Answer: A

Explanation:

Answer:

A

Explanation:

I believe it is A, it makes the most sense since the refuge would be a protected area,  the removal of non renewable resources would be highly contested

what process is responsible for the formation of glomerular filtrate

Answers

Answer:

The process by which glomerular filtration occurs is called renal ultrafiltration. The force of hydrostatic pressure in the glomerulus (the force of pressure exerted from the pressure of the blood vessel itself) is the driving force that pushes filtrate out of the capillaries and into the slits in the nephron.

What are the eight different elements that cereal contains​

Answers

earth, wind ,fire ,and air

if you want brainlist answer my questions and you will get it ​

Answers

Answer:

ti teg lliw uoy dna snoitseuq rewsna tsilniarb tnaw uoy fi

Explanation:

mirror

Which of the following would NOT be considered growth and development?
A. a single cell getting larger before dividing
B. an egg becoming multiple cells
C. an organism going through multiple stages of life
D. group of molecules that are attracted together to form a larger sheet​

Answers

The answer is D cause is the best

Group of molecules that are attracted together to form a larger sheet​ is not considered as growth and development. The correct option is D.

What is growth and development?

Development is defined as an increase in psychomotor capacity, while growth is defined as an irreversible constant increase in size.

Both processes are heavily influenced by genetic, dietary, and environmental factors.

Growth is defined as a person's development in weight, age, size, and habits.

Development, on the other hand, is defined as the process by which a person's growth is visible in relation to physical, environmental, and social factors.

Growth simply means an increase in the size and mass of a specific organism over time.

Development is defined as the method by which a specific organism transforms itself from a solitary cell to a more complex multicellular organism.

Thus, the correct option is D.

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The sun reaches its highest point in the Northern sky (North of the equator) on the:
A. Summer solstice
B. Winter solstice
C. Vernal Equinox
D. Autumnal Equinox

Answers

Answer:

A . Summer solstice... around June 21

Wind power is an indirect form of what type of power?

Answers

Answer: solar power

Explanation:  Wind power is considered indirect forms of solar power because the wind's energy originates in the uneven heating of the Earth. Water power is considered indirect solar energy because water is evaporated by solar hear, lifted and carried by the winds

A carrier mother (XHXh) of hemophilia marries a normal father(XHY). *Use allele letter H What are the mothers and fathers genotype?

Answers

Answer: The mother of the man can be either XHXH or XHXh and pass her normal allele to the son and his father can be either XHY or XhY, he only passes his Y chromosome. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

Explanation:

Hemophilia is an inherited bleeding disorder in which the blood does not clot properly. This can cause bleeding either spontaneously or after an injury.

It is related to the X chromosome and it is recessive for females, this mean they need both affected alleles to develop the trait. Males only need one recessive allele because they only have one X chromosome. This means that females need both parents to be at least carriers (although one or both can also have the disease or both recessive alleles). While males inherit it only from the mother, either she is a carrier (one recessive allele) or she has the disease (both recessive alleles). Then the mother passes the X chromosome with the affected allele to the son, and that son only receives the Y chromosome from the father, which does not have the gene that determines this disease.

If the mother is a carrier, her genotype is XHXh, being XH the normal allele and Xh the affected allele. She does not have hemophilia because she has a dominant allele. The father is XHY, so he does not have the disease because his only allele is normal (dominant)

The mother of the man can be either XHXH (she can only pass a normal allele) or XHXh and pass her normal allele to the son (in this case, the recessive allele is not inherited by chance.) His father can be either XHY or XhY, he only passes his Y chromosome which is not related to the disease. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

How can the variables light,water,and plant change

Answers

By changing the controlled variable.

Inside
Outside
0
10
20.30
50
60
30
80
90 100
Time
(minūtes)
Change in
mass 19
6
0
3
2
9
33:
39
N
1.5.1
(10)
Plot a line graph of these results.
List TW nyimnmental factors that sould have caused the greater change
12​

Answers

Answer:

The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the south

The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the south

How does anatomical homology provide evidence of evolution?

Answers

Evidence for evolution is provided by homologous structures. These are structures shared by related organisms that were inherited from a common ancestor. Other evidence for evolution is provided by analogous structures.

What did Mendel discover
that true-breeding pea plants
do when allowed to self
pollinate?
A. They seldom have offspring with the
same traits as the parent plant.
B. They always have offspring identical to
the parent plant.
C. They always have offspring that
differed from the parent plant.

Answers

Answer: B. They always have offspring identical to the parent plant.

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