Chapter 16. 16·7–16·11 Human activities can have disruptive environmenal impacts.

Show What You Know - Self Quiz

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You must read each slide, and complete any questions on the slide, in sequence.

Instructions

Check your understanding of concepts from 16·7–16·11 Human activities can have disruptive environmenal impacts by answering the following questions.

1.

1. Acid precipitation is largely caused by:

the release of carbon dioxide from automobiles.

the burning of sulfurous and nitrous fossil fuels.

deforestation and hairspray.

the greenhouse effect.

the release of chlorofluorocarbons (CFCs).

Correct. (See section 16·9 Human activities can damage the environment: 2. Acid rain harms forests and aquatic ecosystems.)

Incorrect. (See section 16·9 Human activities can damage the environment: 2. Acid rain harms forests and aquatic ecosystems.)

2.

2. As acid falls on the soil, it carries away ________________ ions, which are essential nutrients for plants.

phosphorus, nitrogen, and potassium

calcium, potassium, magnesium, and sulfur

calcium, phosphorus, nitrogen, and potassium

calcium, potassium, magnesium, and aluminum

calcium, potassium, magnesium, and sodium

Correct. (See section 16·9 Human activities can damage the environment: 2. Acid rain harms forests and aquatic ecosystems.)

Incorrect. (See section 16·9 Human activities can damage the environment: 2. Acid rain harms forests and aquatic ecosystems.)

3.

3. Today, the landscape of New England consists mainly of forests. One hundred and fifty years ago, the landscape of New England consisted:

mainly of farms.

of a mix of forests and prairies.

mainly of forests.

mainly of prairies.

of a mix of farms and prairies.

Correct. (See section 16·7 Some ecosystem disturbances are reversible, others are not.)

Incorrect. (See section 16·7 Some ecosystem disturbances are reversible, others are not.)

4.

4. Exotic species can disrupt ecosystems because:

they have better dispersal capabilities than endemic species.

they frequently have no predators in their new habitat and grow unchecked.

they are favored by ecotourists.

they have no natural prey items and so must rely on humans for their survival.

All of the above are correct.

Correct. (See section 16·8 Human activities can damage the environment: 1. Introduced non-native species may wipe out native organisms.)

Incorrect. (See section 16·8 Human activities can damage the environment: 1. Introduced non-native species may wipe out native organisms.)

5.

5. Which of the following situations is irreversible?

the decrease in whale populations due to hunting

the loss of bacteria due to flooding

the devastation caused by a volcanic eruption

the loss of an entire species

the logging of a forest

Correct. (See section 16·7 Some ecosystem disturbances are reversible, others are not.)

Incorrect. (See section 16·7 Some ecosystem disturbances are reversible, others are not.)

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