Choose the correct answer.
That's Correct!
It's Wrong!
Pollution can be in the air, water, or land. Pollution is what causes harm to the environment.
For example:

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Key Data
Questions
37
Grade
1, 2
Theme
Earth & Its Resources
Passing score
80%
Progress
8
Incorrect
10
Correct
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37