without trees returning water vapor back into the
atmosphere, the water cycle becomes critically disrupted.
when trees are cut down, there is no longer a canopy to
shade the forest during the day and hold in heat at night.
this results in extreme temperature swings. finally, trees
absorb greenhouse gasses that contribute to global
warming. fewer trees mean that more of these gasses are
released into the atmosphere.
-which statement best describes the main idea of this passage?
o
a. global warming is caused by a lack of moisture in the
atmosphere.
o
b. people need to reduce their consumption of paper and lumber
products.
o
c. planting more trees can reduce the energy costs of heating
and cooling homes.
o
d. the loss of trees has a major impact on the global climate