It would be d because a cell is least complex and organ system is most complex
Heat from the sun makes it through near the Antarctic (where the hole is) is melting the ice and not allowing some key species to feed. seals don't have ice to come up for air through like normal so polar bears starve. loss of land means less food for a lot of species because the hunting grounds is closing and there is no room to expand.
<span>While the open ocean produces little in terms of biomass, it contributes a great amount to the biosphere because of its serving as a habitat for small, primary producers as well as playing a big role in geochemical cycling.</span>
Mmm idk why either. Evolution is not proven as no one kept apes and see it grow into a human. It doesn't really make sense too. Animals don't have moral judgement, and can't create and understand images of art and drawing. It is weird if apes somehow adopts the abilities and become a human.