A chemical produced in growing tips of plants is called a (n):

A. cell

B. vitamin

C. protein

D. auxin

Where the upper and lower eyelids meet near the bridge of an animal's nose is the?

How does removing trees affect nitrogen cycling in a forest ecosystem? A. After clearcutting, more soil nitrogen was exported via runoff, ultimately accumulating in the lake. B.

Explain and briefly describe the geological time scale. How does it relate to the science of biology?

The energy consumed by organisms remains constant at all trophies levels? True or false

In which phase of the cell cycle do cells grow and synthesize new proteins and organelles?. A) M phase. B) G1 phase. C) S phase

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.