Students usually have trouble with the terms "changes in demand" versus "changes in quantity demanded." Why do economists make such a fuss about this terminology ? This is a question regarding economics

Sand spinifex grass is adapted to growing on sand dunes. it is a rapidly spreading plant and the creeping runners produce new root systems. which of these best explains the benefits of these features? a. it limits water loss through the leaves. b. it provides support by anchoring the plant. c. it protects the plant from predators. d. it allows the plant to tolerate salt. reset submit

Can a trait be both polygenic and have multiple alleles? explain why or why not.

How energy move through ecosystem ?