Why do we need to preserve our rain forest?

Question

Why do we need to preserve our rain forest?

Answer 1

Rain forests are important for global biodiversity, regulating the global biogeochemical cycles, and are acting as a carbon sink.

Answer 2

To maintain the oxygen level.  

Answer 3

To minimize global warming and have ecological balance.

Answer 4

We don't. Poor people just have a fascination with standing in the way of progress.