the abiotic factors that might cause annual fluctuations in the rate of photosynthesis in a grassland ecosystem are

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal responds by in order to its core temperature?

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?