How can these forelimbs explain how life changes over time?

The correct answer would be divergent evolution showing by homologous organs.

Explanation:

In the illustration human arm, the flipper of the dolphin, wings of bat and forearm of frog are shown. All  these four forelimbs have a different function, however, these forelimbs are having the same underlying anatomy.

The organs having basic structure and origin, but different functions are known as homologous organs. These organs point towards the same ancestor from these organisms evolved. They show a case of divergent evolution.

When related species become less similar in order to adapt and survive in different conditions, evolution is called divergent evolution.

Thus, these forelimbs provide evidence for divergent evolution.

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.