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ycow [4]
4 years ago
9

Which animals are the oldest vertebrate fossils?

Biology
1 answer:
bezimeni [28]4 years ago
8 0

Answer: Armored fish

Explanation:

The earliest known fossil vertebrates were heavily armored fish discovered fish in rocks from the Ordovician period.

The fossils shows the path from the early aquatic life to the vertebrates, vertebrates to mammals.

The fossils shows that it is vertebrate and are the oldest known fossil ever known. The fossils of the animals and plants helps to known the behavior of the past time and based on that research and study is done.

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D) cardiovascular system, interstitial fluid, lymph, cardiovascular system

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Select the correct answer from each drop-down menu. what are the four types of nitrogen bases of dna nucleotides? the four types
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The four types of nitrogen bases of dna nucleotides are:

  1. Adenine (A)
  2. Cytosine (C)
  3. Ganine (G)
  4. Thymine (T).

These bases form specific pairs (A with T, and G with C).

<h3>What is DNA nucleotides?</h3>

Nucleotides can be defined as those organic substances consisting of a nucleoside and a phosphate.

They serve as monomeric units of the nucleic acid polymers –

  • Deoxyribonucleic acid
  • Ribonucleic acid,

So therefore, the four types of nitrogen bases of dna nucleotides are:

  • Adenine (A)
  • Cytosine (C)
  • Ganine (G)
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Learn more about DNA nucleotides:

brainly.com/question/16273896

#SPJ1

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