Pollution caused by sulfur in burning coal

A. Metabolism   B. Acid Rain   C. pH   D. Homeostasis

Hydrogen ion concentration of a solution

A. pH   B. HIV  C. Hypothesis  D. Heredity

Act of noteing objects or events

A. Hypothesis  B. Prediction  C. Observation

 D. Experiement

Part of an experiement that is not allowed to change

A. Theory  B. Control  C. Extinction  D. Hypothesis

An explanation that has been tested many times

A. Experiment  B. Hypothesis  C. Prediction  D. Theory

The study of life

A. Biology  B. Metabolism C.Experiment  D. Hypothesis

Smallest unit capable of life functions

A. cell  B. Virus  C. Metabolism  D. DNA

All the chemical reactions in an organism

A. Homeostasis  B. Heredity  C. Metabolism  D. Biology

Living things maintain stable internal conditions

A. Multicellular  B. Homeostasis  C. Extinction  D. Heredity

Living things produce more living things

A. Heredity  B. Reproduction  C. Homeostasis  

D.Metabolism

A set of intructions passed on to offspring

A. Reproduction  B. Multicellular  C. Heredity

D. Homeostatis

Destruction of living species

A. Extinction  B. Homeostasis  C. Heredity  F. Hypothesis

The test of a hypothesis 

A. Experiment  B. Observation  C. Prediction  D. Theory