What is the process of holding factors constant?

A. Variable

B. Control

C. Replication

D. Phenomena

B. Control

What is a theory made by a scientist as to the cause and effect of a phenomenon?

A. research problem

B. related studies

C. Abstract

D. Hypothesis

D. Hypothesis

What is the Metric System?

A. Units are based on multiples of ten

B. Units such as inch/foot, quart/gallon are used

C. Uses English units

D. the United States Standard System

A. Units are based on multiples of ten

________ represents openings in soil occupied by air and water

A. Inorgainc matter

B. Mineral matter

C. Organic matter

D. Pore space

D. Pore space

What is soil?

A. a thick layer of parent materials in which plant roots grow

B. a layer on the earth's crust that provides a combination of resources

C. Dirt and airborne particulates that have collected over the years

D. Minerals made avaliable and recycled through decaying materials

B. a layer on the earth's crust that provides a combination of resources