As there are different levels of gases or more over elements been found inside the composition of the atmosphere,while different mixtures of gasses combines together to form the atmosphere for the planet Earth. For the CO₂ its is released as a waste product from most of the industrial process, along with which the compound is also released by the primary producers or we can say by the plants at night time when the perform the cellular respiration process for having a balanced level of energy system.
And we human also excrete the optimum amount oxygen from our body in order to have a more balanced form of body mechanism.
The definition of vestigial organs are rudimentary structures in humans
that correspond to a functional structure or organ in an ancestor.
Basically the answer is redundant organs present in an organism, which
have been functional in the organism's ancestors.
<u>B.It increases the surface area available for ATP production, which results in faster cell growth.</u>
Explanation:
The electron chain reaction in the mitochondria occur at the inner mitochondrial membrane, So greater the folding of inner membrane of mitochondria that is also known as cristea, greater would be ATP Production.