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ella [17]
3 years ago
12

3. When did reptiles first appear in the fossil

Biology
1 answer:
dexar [7]3 years ago
4 0

Answer:

A

Explanation:

Reptiles arose about 310–320 million years ago during the Carboniferous period.

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Which of the following correctly describes the appearance of muscle tissue found in the heart? (2 points) Single-nucleus, non-st
muminat

Answer:

The correct option is B.

Explanation:

Muscle tissues of the heart refers to a group of cells that are carrying out similar functions in the heart. There are three different types of muscles, these are skeletal, cardiac and smooth muscles. The cardiac muscles are found in the heart, they form the contractile wall of the heart. These muscle contract involuntarily ( that is, without any external stimulation) and they are single nucleus, striated and short.

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4 years ago
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Select all that apply. The Chordata phylum consists of _____.
faltersainse [42]
The answer is tunicates. Tunicates are commonly known as sea squirts and are in the Chordata phylum, even though they don't have a back bone. Which is really weird. But they just got put into the same category as humans. This is because they have a notocord and a back bone when they are larvae. But they lose all these when they become adults.
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3 years ago
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Answer: 2,000 miles.

Explanation:

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8 0
2 years ago
The photo shows one kind of sensory organ a owl has. Which external stimulus is this sensory organ best able to detect?
neonofarm [45]

Answer:

A

Explanation:

I know this because I just took the test and got it right.

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3 years ago
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<em>Hope this helped! :)</em>
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