The leaves of photosynthetic plants appear green because the chlorophyll pigments
reflect green wavelengths of visible light
use the green wavelengths of light to conduct photosynthesis
reflect blue and red wavelengths of visible light
absorb green wavelengths of visible light

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.

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities