Question

Q2. The farmer’s suggestion is that the insecticide decomposed with age. Give two alternative explanations as to why "insecticide A was becoming less and less effective.

Answer 1

Answer:

1.The insects were becoming resistant to the insecticide.

2. The new insects that were born possessed some characteristics as a result of which they were not easily killed by the insecticide.

Answer 2

ANSWER:

The insecticide A was becoming less and less effective as the insects had developed resistance towards it.

EXPLANATION:

     As the farmer continued using the insecticide, the insects gradually got used to its effects. Over time they began to develop immunity towards that insecticide and as a result the insecticide's effects on the insects began to reduce.

     This led to an increase in the population of the insects which were no longer affected by the insecticide. As a result the insecticide became less and less effective.