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Digiron [165]
2 years ago
9

Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis

Biology
1 answer:
ikadub [295]2 years ago
6 0

Scientists think that dolphins and whales may have evolved from a common ancestor because they have similar anatomies.

<h3>What is a common ancestor?</h3>

A common means different animals now, have evolved from a single ancestor or animal.

These animals may share common characters and structures.

Whales, dolphins, and porpoises are evolved from a common ancestor; cetacean.

The animals that evolved from cetaceans are all aquatic, primitive cetaceans were amphibians too.

Thus, They have similar anatomies.

Learn more about ancestors

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What is the relationship between undisturbed sedimentary rock layers and fossils?
Juli2301 [7.4K]

Answer:

Older fossils are found in deeper layers of sedimentary rock.

Explanation:

The relationship between undisturbed sedimentary rock layers and fossils is that older fossils are found in deeper layers of sedimentary rocks.

This is one of the premise of the law of superposition and principle of fossil and fauna succession.

  • An undisturbed sequence is one in which the sedimentary layers have been arranged sequentially.
  • The oldest is at the bottom and the youngest on top.
  • Also, fossils grade in this manner too.
  • The oldest fossils will be in the oldest bed which is the deepest layer.
  • The youngest bed will contain the youngest fossils in like manner too.
7 0
3 years ago
Parents who are heterozygous for having freckles are crossed. Which represents the ratio to their offspring
lisabon 2012 [21]
The average families with blonde hair, pale skins with gene of past family freckles mixed with red hair ca male freckles
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4 years ago
The human body is composed of approximately 60% of water.<br> a. true<br> b. fale
Step2247 [10]

Yes, the human body is composed of approximately 60% of water. The given statement is true.

Water is essential for human health and for the survival of life on earth.

It keeps them alive, stale and healthy by providing oxygen and chief nutrients to the body.

It lubricates joints, knees and also removes waste materials from the kidney, and keeps them clean.

In adult humans, there is approximately 60% of water in their bodies.

The concentration of water is more in lean tissues than in fat tissues.

Women's bodies have more fats than men and water makes up only 55% of their bodies.

If you need to learn more about the water cycle click here:

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5 0
2 years ago
Which list of characteristics describes organisms classified as bacteria?
Anettt [7]

Answer:

C - Unicellular, prokaryotic, autotrophs or heterotrophs

Explanation:

8 0
3 years ago
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Which of the following is a result of burning fossil fuels for energy?
gladu [14]

Answer:B. All of the above

Explanation: Fossil fuels do generate electricity. Example burning coal

Acid rain is cause by Sulfur dioxide. Sulfur dioxide is produced from powerplants.

When you burn Fossil fuels it increases the atmospheric Co2.

4 0
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