The answer to this question is:
A) Chromatin
Had to correct myself, sorry. Hope I helped.
The atmospheric pressure drops so the partial pressure of O2 drops proportionately. The hemoglobin must circulate faster to deliver the same quantity of oxygen to working muscles' mitochondria for cellular respiration. This increased basal circulation rate places a greater demand for oxygen to support it, which triggers in increase in red blood cell population so there is more hemoglobin to deliver O2. With more RBCs the circulation rate once more slows to the old basal rate.
True. The definition of ecology in easier terms is 'a branch of biology that focuses on how animals and plants relate to problems and stimuli.'
The answer is C. It states that energy can only be moved from object to object.
A. Divergent Evolution..... Hope this helps!