Cellular respiration and photosynthesis are complementary processes because they use each others' products and reactants.
Photosynthesis' products are cell respiration's reactants; likewise, cell respiration's products are photosynthesis' reactants.
Also, photosynthesis is known to take away carbon dioxide from the air and put in oxygen while cellular respiration does the opposite, putting in carbon dioxide while taking away oxygen.
Chloroplasts should be the answer
Angiosperms are the most diverse
and successful plant group. It has double fertilization which leads to the
formation of an endosperm. It also has a stamen with two pollen sacs. It has a
phloem tissue that is composed of sieve tubes and companion cells.
Oxygen ... The biogeochemical cycle of phosphorus differs from the cycles of carbon and nit.
I would go with D as it is closest to correct. Every part of the surface of the Earth is a tectonic plate though. The plates vary in thickness, but all of the surface of the Earth is made up of tectonic plates, including the parts under the ocean. Technically, the Earth's landmass does not rest on the tectonic plates, it IS the tectonic plates, but it is the closest to correct here in my opinion.
