Question

after harvesting sometimes stubs are left in the field which are burnt by the farmers prepare a poster on effects of burning stubs on environment and health of living beings

Answer 1

Here is your answer draw stubs burning instead of the chimney

Answer 2

When the crops are cultivated in the fields which are used for cultivation purpose, the stems and the remaining part are left to dry out in the fields.

After a huge span of time when the stems becomes extremely dry they are packed in groups and they are burned in the middle of the field.

This is a very bad process of reduction of the wastes. It creates a lot of smog which contribute to the air pollution and the Pollution of the soil. Hence this should be stopped immediately.