There are three main types of rocks: sedimentary, igneous, and metamorphic that form the rock cycle. Hope this helps :)
Answer:
D
Explanation:
As population grows all the above factors increase expect the biodiversity of animal and plant species.
Answer: They have a backbone
Explanation: Humans and fish are both vertebrates. Vertebrates are organisms with a backbone.
<span> All the millions of different proteins in living things are formed by the bonding of only </span>20 amino acids<span> to make up long polymer chains.</span>
