Which process takes many millions of years and is too slow to affect the climate in our lifetimes? *

A (plants taking in CO2 during photosynthesis)
B (animals respiring/exhaling greenhouse gasses)
C (fossil fuel combustion to make energy)
D (plants dying and decomposing in the soil)
E (buried remains of once-living things turning to fossil fuels)

Which process takes many millions of years and is too slow to affect the climate in our lifetimes A plants taking in CO2 during photosynthesis B animals respiri class=