The gradual decline in men's testosterone levels in middle age can reduce their sex drive
My best guess is allergies
A. The amount of carbon dioxide a person releases into the atmosphere
If chlorophyll were red instead of green, making plants red in appearance, red light would be expected to produce the LOWEST rate of photosynthesis. Plants absorb light primarily using the pigment chlorophyll, which is the reason that most plants have a green color.
Answer:
B
Explanation
It is sunlight because producers need sunlight to grow. For example, an apple tree is a producer. It uses the sunlight to grow and create the fruit. The fruit is then consumed by a consumer (number 2 on the diagram).