The condition in which the ovaries cease functioning before age 40 is known as

What causes darkening of the skin as melanin production increases

When plants use sunlight to make food, the energy of sunlight is

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?