Arelationship in which one organism lives in or on another organism and benefits from that relationship while the host organism is harmed by it

Which plant has a visible leaf modification that will it conserve water in extremely dry environments?

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature about 37 degrees celsius (98.6 degrees f)? describe what might happened the temperature decreased by 10 degrees celsius.

What function does a limb serve in each animal how are the limb bones of the four animal similar based on the similarities what can be inferred about the evolution of the poor animals