1. Which of the following is considered a replaceable resource?
A: topsoil
B: groundwater
C: wood
D: plant and animal species
2. In the early 1970s, chemists Sherwood Rowland and Mario Molina stated that CFCs
A: could catalyze the conversion of O2 into O3.
B: were chemically inert and therefore harmless.
C: could catalyze the conversion of O3 into O2.
D: could help shield the Earth from ultraviolet radiation.
3. Rainforest species are becoming extinct primarily because of
A: disease
B: pollution
C: hunting
D: loss of habitat
4. CFCs and carbon tetrachloride are considered to be ozone-depleting chemicals.
true or false and why??
A: topsoil
B: groundwater
C: wood
D: plant and animal species
2. In the early 1970s, chemists Sherwood Rowland and Mario Molina stated that CFCs
A: could catalyze the conversion of O2 into O3.
B: were chemically inert and therefore harmless.
C: could catalyze the conversion of O3 into O2.
D: could help shield the Earth from ultraviolet radiation.
3. Rainforest species are becoming extinct primarily because of
A: disease
B: pollution
C: hunting
D: loss of habitat
4. CFCs and carbon tetrachloride are considered to be ozone-depleting chemicals.
true or false and why??