What are the two processes that create genetic variation in living things over time?

Which swedish biologist is often called the father of taxonmony

For a mutation to affect evolution

Many bivalves, like scallops, live in salt water. The scallop captures food particles from water that flows over its gills. Which of these is the best classification of the scallop? a. a chunk feeder b. a decomposer c. a filter feeder d. a grazer

A person with blood type B gets severely injured and needs a blood transfusion. What blood type would a person need to be in order to donate their blood to the injured person?

How often is water added to the Earth's system?

An educate guess about the meaning of the term "chlorophyll"

All BUT one of the phrases describe a function of the human skeletal system. That is A) allows for movement. B) protects internal organs. C) produces red blood cells. D) filters unwanted substances.

Why is it important for cell division to occur?

Which of the following is true about the hierarchy or organization of life? (Check all that apply) A. Changes at the lowest level can affect the more complex levels. B. Cells make up tissues. C. Cells are made up of macromolecules. D.

Unwrapped food placed in a freezer experiences dehydra - tion, known as "freezer burn." why?