All the above is correct.
It is called hydrosphere
It is the total water in Earth.
A rabbit is a primary consumer
Answer:
they need to be able to maintain their salt content, thru osmoregulation
The correct answer from the choices listed above is option A. Adaptations took advantage of the presence of free oxygen in the oceans and atmosphere by the <span>evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules.</span>
