What Are the Primary Pollutants from Automobile Exhaust

question 8

Short Answer

What are the primary pollutants from automobile exhaust?

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Definitions:

Correlated

When two or more variables are related in some way, indicating that changes in one variable are associated with changes in another.

Experiment

A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Hypothesis

A proposed explanation for a phenomenon, made as a starting point for further investigation, often testable by experimentation.

Laboratory Observation

The process of watching subjects in a controlled environment to gather data or test hypotheses.