Which type of chromosomal mutation causes this form of down syndrome? nondisjunction, insertion, inversion, or deletion

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

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.