Growth of populations in an ecosystem can be limited by an increase in A. predation
B. resources
C. shelter
D. Water

Where in the body can you find chemoreceptors? a. on the skin and ears, to detect pressure, touch, motion, and sound b. on the retina, to detect a single photon of light c. on the skin, to detect temperature or specific chemicals d. on the tongue and in the nose, to detect taste or odor

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water