Chapter 21 Lesson 1 Flashcards

0
Q

Pesticides

A

Chemicals meant to kill bugs/pests

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1
Q

Pollution

A

The presence or introduction of harmful substances into the environment

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2
Q

Acid rain

A

Rain containing harmful chemicals

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3
Q

Smog

A

Thick smoke from cars/etc

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4
Q

Greenhouse Effect

A

The heating of the earth caused by gases in our atmosphere

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5
Q

Biodegradable

A

Broken down easily in the environment

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6
Q

Conservation

A

Saving of resources

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7
Q

Precycling

A

Reducing waste before it occurs

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