Answer: Number 2, aka Solid wastes on land.
Explanation: Bacteria in soil is a natural thing, so it's not polluting the earth. Oxygen in the atmosphere is letting us live, meaning it's not polluting the earth. Fish in rivers is also another natural thing, leaving us with solid wastes on land.
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The hot air when come to close cold air forced to increase its speed
Which makes monsoon and also thunderstorm perform
Lactobacillus is the answer for this question
I believe the answer is TRUE.