Ocean and freshwater contamination
a. does not affect marine life
b. is not affected by agriculture
c. results from industrial activity
d. is independent of human activity

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence

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.