There is no such thing ? It can't be an organism if it does not do any of the above
The correct answer is: subjunctive and conditional.
Subjunctive mood – mood used for the expression of various states of unreality. This include the states such as wish, emotion, possibility, opinion..
Conditional – used for the expression of states: what could happen, what might have happened, and what we wish would happen..
I don't think the answer is A as that seems a bit drastic, I think it's C.
There's so much confusion going on between<span> the acronyms </span>RER<span> and RQ. At the state of rest the </span>RER<span>, completely known as the </span>respiratory exchange ratio<span>, is actually the same as RQ or </span>respiratory quotient<span>. ... The RQ is a metabolic </span>exchange<span> of gas </span>ratio<span> that is equal to CO2 production over oxygen uptake </span>
You're correct because when birds hit their max altitude it's harder to breathe and to minimize the time of there flight they store immense amounts of oxygen in their lungs.
