How can society use scientific research on environmental issues?
A. To change people's behavior
B. To create jobs for scientists
C. To elect informed politicians
D. To make people feel guilty

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.

How many pounds does the earth weigh?

Can someone me i need the answer and don’t understand?