Human Environment Interaction

Question 1

thick haze of smoke and chemicals.

Answer 1

smog

Question 2

chemicals from air pollution that combine with precipitation.

Answer 2

acid rain

Question 3

buildup of certain gases in the Earth’s atmosphere that, like a greenhouse, retain the sun’s warmth.

Answer 3

greenhouse effect

Question 4

changing what crops farmers plant in a field from year to year.

Answer 4

crop rotation

Question 5

cutting down of forests without replanting new trees.

Answer 5

deforestation

Question 6

careful use of resources to avoid wasting them.

Answer 6

conservation

Question 7

process of collecting water and distributing it to crops.

Answer 7

irrigation

Question 8

powerful chemicals that kill crop-destroying insects.

Answer 8

pesticide

Question 9

place shared by plants an animals that depend on one another for survival.

Answer 9

ecosystem

Question 10

variety of plants and animals living on the planet.

Answer 10

biodiversity

Question 11

a thickness or fold.

Answer 11

layer

Question 12

a method of accomplishing something.

Answer 12

technique