i need to know how deforestation,soil erosion,acid rain and the green effect, affect weather/climate.?

Answer 1

I suggest you put:
deforestation climate
and
"soil erosion" climate
and
"acid rain" climate
and
"green effect" climate
into Google. There's plenty of stuff out there and far too much for an answer in this forum.

Answer 2

Soil erosion causes the trees to fall and leads to deforestaion(apart from man-made).This deforestaion affects the transpiration leading to lesser rainfall.Acid rain damages plants and trees which in turn afects the transpiration and rainfall.Increase in the greenhouse effect will lead to global warming the consequences of which are dangerous.