The correct answer is B.
IPM (Integrated Pest Management) is a mechanism which aims to practice the economically viable control of pests. It consists on implementing the adequate measures to prevent the proliferation of pest populations, but keeping pesticides at the lowest level, provided that they do not constitute a threat to human health, or a minium one, and only if their application is justified by economic interests.
IPM was implemented in Indonesia in 1986, by prohibiting the use of 57 pesticides in rice crops and cancelling the subsidies for pesticides (about US$120 million a year). Also, the intention was to limit the resurgence of BPH (the main pest in rice crops), as it was becoming resistent after an excessive use of pesticides in Indonesia. The yields were intensively decreasing due to the spread of that pest.
Answer:
The author describes the importance of immigration reform to boost immigration of scientists and engineers from other countries to the United States. The author mentions that the United States grants too few work visas to foreign scientists. We can foster innovation by giving more foreign scientists and engineers extended work visas. This policy would mean the United States could bring the best scientists to work on US projects right now. However, one downside is that this policy doesn’t address the lack of American students studying to be scientists and engineers.
Explanation:
Sample Answer
Campaign against apartheid: 2 December 1950 — The General Assembly declared that "a policy of 'racial segregation'
