Answer:
Gas exchange during respiration occurs primarily through diffusion. Gas molecules move from a region of high concentration to a region of low concentration. Blood that is low in oxygen concentration and high in carbon dioxide concentration undergoes gas exchange with air in the lungs.
Explanation:
Answer:
D i belive, if i'm worng, please don't be mean about it
Explanation:
its a diploid cell that comes from the fusion of two haploid gametes.
aka a fertilized ovum.
tyyy ima collect this meme
Answer:
B.
Organisms use some of the energy they take in for life process... Like respiration, thermoragulation, etc