Non renewable resources can be replaced
a. immediatlly (this one is stupid it takes a long time)
b. in less than a 100 years
c. in more than 100 years or never
d. only with other energy sources

2. which pollutant is a source of water pollution?
a. dust
b. fertilizer run-off
c. fumes
d. smoke

3. acid rain is caused
a. cigarette smoke
b. polluted gases mixing with water in the air
c. rain falling during hot weather seasons
d. the hole n the ozone layer