4. use the prompts to write sentences. include a comma there necessary. a) if / rainforests / disappear / local people / lose / their way of life. b) if / the climate / get / drier / crops / not grow. c) fires / be / more common / if / the climate / become / drier. d) there / not be / enough oxygen / if / we / not save / the trees. e) if / we / not do / something now / the rainforest / disappear.

a) If rainforests disappear, local people will lose their way of life. 
b) If the climate gets drier, crops will not grow. 
c) Fires will be more common  if  the climate becomes drier. 
d) There won't be enough oxygen if  we don't save  the trees. 
e) If we do not do  something now, the rainforest will disappear.