What can prevent the developing of greenhouse effect?
5. Why are water circulation patterns changing?
6. What might cause disappearing of large areas of coastal land?
7. Does the warming affect biological communities?
8. Is there a correspondence between greenhouse effect and global warming?

Объяснение:

? не знаю

2) - their  office  hours don't begin  at 9 o'clock

? do  their  office hours begin  at 9 o'clock?

3) - mr. bell isn't busy all day.

? is mr.bell busy all  day?

4) - there aren't sone cables on the table.

? are some cables on the table?

5) - she can't translate some letters from english into russian.

? can she translate some letters  from  english into russian?

6) - he doesn't has some offers  fron bell& co.

? does he has some offers from bell& co.

7) - mr. smith hadn't  bought several machines  from green& co by  june 2005.

?   had mr. smith bought  several  machines  from green& co  by june  2005?

8) - they weren't reading french newspapers yesterday at 5 o'clock.

?   were they  reading  french newspapers  yesterday at 5 o'clock?

9) - the engineers didn't meet some inspectors  a  week ago.

? did the engineers  meet some inspectors  a week ago?

10) - we haven't already received fives enquiries  from blake& co.

? have we already  recieved fives  enquiries  from blake& co?

11) - they haven't  a lot of  offices in london.

? have they  a lot of  offices  in london?

я думаю, что работа( всё в таком духе) после школы для детей полезна, потому что они учатся хорошим привычкам: как не опаздывать, как быть ответственными и самостоятельными. она (работа) учит детей зарабатывать на те вещи, которые они хотят (купить имеется в виду) , а не просто ждать своих маму и папу, чтобы они им их купили.