Question

помогите пожалуйста ​

Answer 1

ex1
a career, down, Profitability, scene или of (зависит от контекста, думаю of), of
ex2
2) an enormous amount of rubbish are produced by people every year
3)soil and air are damaged by acid rains and fossil fuels
4)the problem of deforestation is caused by cutting down trees in different areas
5)environmental pollution should be stopped by us (не уверена)
6)clean water is needed by people in remote areas in africa to survive