Answer:The dependent variable is the variable that is being measured.
Explanation:
<span>The diversity of proteins and their extraordinary range of functions control the great diversity of life. In order for a protein to function correctly, it must fold properly. </span>
I dont know the era, but early life on earth was horrid for our type of species we have right now, they're was no oxygen, on C.dioxide and other properties, the earth was EXTREMELY hot due to not having an atmopshere yet, And no water, only gas, then fungus and other micro organisms formed due to the heat, and gas which is why fungus can survive in such horrid conditions.
B. One
because an independent variable is something you change. So in a scientific experiment you only change one thing. If you happen to change more than one thing then the test becomes unfair therefore you should repeat and make sure that only one thing is changed this time.