2.4 Flashcards
1
Q
thick haze of smoke and chemicals
A
smog
2
Q
chemicals from air pollution that combine with precipitation
A
acid rain
3
Q
buildup of certain gasses in the earth’s atmosphere that, like a greenhouse, retain the sun’s warmth
A
greenhouse effect
4
Q
changing what crop farmers plant in a field from year to year
A
crop rotation
5
Q
cutting down of forests without replanting new trees
A
deforestation
6
Q
careful use of resources to avoid wasting them
A
conservation
7
Q
process of collecting water and distributing them to crops
A
irrigation
8
Q
powerful chemicals that kill crop destroying insects
A
pesticide
9
Q
place shared by plants and animals that depend on one another for survival
A
ecosystem
10
Q
variety of plants and animals living on the planet
A
biodiversity
