Why is an overabundance of nutrients harmful to a water supply?

A.

It decreases the number and types of aquatic plants.

B.

It kills all aquatic plants.

C.

It sterilizes water.

D.

It causes excessive aquatic plant growth.

Describe the skeleton of a sponge

In this modern age of science, which of the following shows the most promise in producing crops with a higher yield?) A. genetic engineering of crop plants B. selective plant breeding C. choosing the best variety for a given area D.

What types of muscle can contract without stimulation from the nervous system

A scientist wants to examine a genetic disease in humans. The scientist hypothesizes that the disease can be treated by using gene therapy. Humans take a long time to reproduce and develop, so the scientist will have to

What happens in a chain reaction? reactants that have two parts split. radioactive reactants are deposited on control rods. products that are radioactive are lost. products that start a new reaction are released?

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.