Choose the right words:

1. Man's greed is threatening the ecology organisms environment resources deforestation generations .
2. The extensive abuse of natural ecology organisms environment resources deforestation generations threatens the very existence of future ecology organisms environment resources deforestation generations .
3. One of the challenges that the world is facing is the issue of ecology organisms environment resources deforestation generations which is the result of cutting down trees without even thinking of replacing them.
4. The term ecology organisms environment resources deforestation generations refers to the study of the relationship between ecology organisms environment resources deforestation generations and their natural environment.

Complete the following collocations:

1. Air, sea, water effect pollution revolution disposal
2. Greenhouse effect pollution revolution disposal
3. Waste effect pollution revolution disposal
4. Industrial effect pollution revolution disposal