Question

Please give information about the circled topic.... ​

Answer 1

Explanation:

2 harmful effects

1. If any harmful microbe (bacteria,potozoa,etc)is taken by the animal it can cause harmful dieses which further enters in the food chain and effect humans also

2.t hey can destroy plants

2 useful effects

1.they convert the atmospheric nitrogen into soluble nitrates which is in taken by plants

2.they decompose organic matter and dead remains and that is beneficial for the plant growth..

Answer 2

Answer:

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