Mass extinctions occurred 250 million years ago and 65 million years ago. according to some scientists, which of the following reasons caused both mass extinctions? the earth’s oceans changed a few degrees in temperature. the diversity in the gene pool decreased dramatically. a new species was introduced into an established ecosystem. a large comet or asteroid hit the earth.

answer; atp and nadph;

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.