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определите тип инфинитивного оборота (сложное подлежащее, сложное дополнение или оборот с предлогом for):
1. A greenhouse effect is expected to cause cooling in higher parts of the atmosphere.
2. It is necessary for people to develop an international program to study data on land, forest, atmospheric and oceanic resources.
3. The new instruments will enable us to determine the level of pollution in our rivers,

1. A greenhouse effect is expected to cause cooling in higher parts of the atmosphere. - сложное дополнение2. It is necessary for people to develop an international program to study data on land, forest, atmospheric and oceanic resources. - оборот с предлогом for3. The new instruments will enable us to determine the level of pollution in our rivers, - сложное дополнение