Which of the following is true about populations that live on or near the ocean floor?

A. They depend on the sun for energy.

B. They live in a low-pressure, high-temperature environment

C. All of the food for these populations falls from above.

D. All of the above.

The influenza virus cause the flu, but not other diseases. why?

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

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?