What is the impact of human on phosphorous cycle? 1. Killing plants 2. No impact 3. Pollution
What is the impact of human on phosphorous cycle?
1. Killing plants
2. No impact
3. Pollution
4. Use fertilizers that are not natural
Choose the correct code
(a) 1 only (b) 2 only (c) 3 only (d) 4 only
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