What is responsible for speeding up reactions in your body? (choose all that apply) A. substrates

B. proteins

C. enzymes

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

As a result of climate change earths temperature is rising and sea ice is melting what is a likely effect? answer : populations of walruses and polar bears will decline

Abotanist working in the amazon rain forest discovers a new species of orchid. interestingly, males but not females of a certain wasp species keep visiting the flowers of these orchids. why?