The primary human source of greenhouse gases in earths atmosphere is:

a. Photosynthesis

b. The mining and burning of fossil fuels

c. the use of aerosol sprays

d. the removal of fossils

Why is it important to watch for increased redness, swelling and pain after a cut or abrasion has been cleaned and bandaged?

An arithmetic progression involves the addition of the same quantity to each number. Which might represent the arithmetic growth of agricultural production? 1, 4, 6 1, 11, 111 1, 5, 10 2, 4, 6

Compare and Contrast characteristics of the three domains.

Name the layers of earth starting at the crust and going in. describe the composition of each layer.

What has depression to do with the nervous system

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.