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.