Which of the following best explains the processes that occur in the leaves of plants? O Water for transpiration enters the plant through the surface of the leaf
Gases for photosynthesis are exchanged through the surface of the leaf.
O Energy for cellular respiration is absorbed through the surface of the leaf
O Carbon dioxide for cellular reproduction enters the plant through the surface of the leaf.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

protistas excret ethanol used in the manufacture of vinegar