The diagram below shows the similar limb structures of a dolphin, a horse, and a bat. Similar bones are highlighted in the same colors.

this is a multiple choice question btw u-u

Which of the following is true about these three species?

All three species have not adapted since their existence.
All three species should be classified within the same genus.
All three species share a distant common ancestor.
All three species evolved over time to best fit unique environments.

the answer is b: 1.4 km/hr

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.