| environmental education |
135,000/mo |
$5.89 |
| environmental monitoring |
49,500/mo |
$8.56 |
| air pollution effects |
90,500/mo |
$1.18 |
| pollution of environment |
201,000/mo |
$1.44 |
| environmental impact assessment |
301,000/mo |
$2.11 |
| environment pollution |
201,000/mo |
$1.31 |
| global warming |
2,740,000/mo |
$1.17 |
| pollution |
5,000,000/mo |
$1.67 |
| air pollution |
1,000,000/mo |
$1.21 |
| forest |
24,900,000/mo |
$1.07 |
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| green |
83,100,000/mo |
$1.13 |
| energy |
55,600,000/mo |
$2.04 |
| rainforests |
2,240,000/mo |
$0.89 |
| environment |
13,600,000/mo |
$1.91 |
| forests |
2,240,000/mo |
$0.81 |
| renewable energy |
1,220,000/mo |
$5.32 |
| land pollution |
74,000/mo |
$0.67 |
| wind generator |
673,000/mo |
$2.32 |
| environmental |
11,100,000/mo |
$2.68 |
| climate change |
2,240,000/mo |
$1.15 |
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