Рассказ 8 предложений с conditionals

Climate change is a real problem, but its
1) importance has been
2) grossly exaggerated. It's far less important than other social problems such as povetry, infectious diseases
3) deforestation, and
4) extinction of species, not to mention war, nuclear weapons and
5) biological weapons. We don't know whether the observed climate changes are, on balance, good or bad for the health of the biosphere. And the effects atmospheric carbon dioxide as a
6) effects on fertilize (здесь опечатка)  of plant
7) growth are at least as important as its effects climate. So, we agree that more research is needed to improve
8) scientific
9) understanding of global
10) warming. 

Объяснение:

1) I have not received a letter from my friend yet, but I hope to receive it in the evening.

2) It is still raining but I hope it will have stopped by the evening.

3) We were walking all day yesterday and in the evening we got to know that my friend had failed her exam.

4) Where are you going? I will be waiting for you in an hour at the bus stop.

5) Have you found a new job? Yesterday you didn't answer my question on the phone. I am sure you will have found a new job by the end of the week.