Помогите с АнглийскимВыберите верный вариант. _______ is threatening the lives of

Помогите с Английским
Выберите правильный вариант.

_______ is threatening the lives of animals and plants (dirty air, pollution, poisonous air)
An earthquake is a __________ event (physical, natural, real)
Anything will grow in this dark rich ________. (soil, land, ground)
Lets take the baby outside, she suggested. We all need some ________ air (pure, clear, fresh)
There is world wide concern about the desctruction of the __________. (tropical woods, rainforests, rainy forests)
Tigers ___________because hunters kill them in order to sell their skins (run the risk, are insecure, are in danger)
Instead of dropping litter in the streets, we should use litter _________. (bags, bins, baskets)
___________, air and water pollution are among the most serious environmental problems. ( The warming of the planet, The worlds warming, Global warming)
Greenpeace try to prevent a lot of environmental _________. (disasters, tragedies, accident)
We should save energy by using ________ power and wind power. (solar, sun, sunny)