Does autotrophs or heterotrophs use photosynthesis

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Which term describes a normal value for something in the body? a.homeostasis b.set point c.feedback loop d.integration center

Explain why biological control methods are generally environmentally superior to chemical pest control methods.