Describe the type of chromosomal alterations implicated in the following human disorders: down syndrome, klinefelter syndrome, extra y

Susan wants to see how different chemicals in the soil affect plant growth. Therefore, she gets all of the same type of plant, sets them up in the same place, waters them the same amount, but then puts different chemicals on each of them.

A contractile vacuole is a structure that collects extra water and expels it from a protist. True or False

What is gene flow and what is an example?

What is the pH range of highly acidic substances?

The largest watershed system in the state is the

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.