Question
The list shows activities that happen in a forest.
1 cutting down only selected trees
2 educating people about forests
3 replanting trees
4 cutting down trees to grow crop plants
Which activities are likely to ensure the forest is used sustainably?
A 1, 2 and 3 B 1, 2 and 4 C 1, 3 and 4 D 2 and 3 only
Answer/Explanation
Ans
A
Question
What can be managed sustainably?
A taking coal from a coalfield
B taking gas from under the earth’s surface
C taking oil from an oilfield
D taking wood from a woodland
Answer/Explanation
Ans: D
Question
During the treatment of sewage, what is removed by screening?
A. bacteria
B. fats and grease
C. large plastics
D. urine