A:similar animal fossils found in South America and Africa
Most adult placental mammals have no remaining trace of the cloaca. Being placental animals, humans only have an embryonic cloaca, which is split up into separate tracts during the development of the urinary and reproductive organs.
C. Amino Acid , hope this helps
Chemically speaking, enzymes are composed of chains of amino acids, and they are considered to be a type of protein.
Factory’s should pay the price