Why is the stigma of a flower sticky

When you are exposed to sun light for a long time your skin which otherwise appears normal gets heavily tanned what could be the reason?

Which of the following is a not limiting factor for rabbits? A. sunlight B. water C. grass D. foxes

Sexual reproduction only requires one parent produces an exact copy of the parent organism requires the sperm and egg cells is the same as mitosis

How does energy flow in an ecosystem?

Jennifer has two times as many quarters as dimes the total value of the coins is $4.20. how many of each coin does she have?

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.