Which One of the Following Statements About the Effects of Deforestation

Which one of the following statements about the effects of deforestation on terrestrial ecosystems is false?

A) At present rates of deforestation,it is predicted that all of the world's tropical rain forests will be degraded or gone within 30 years.
B) Today,deforestation is the greatest problem facing terrestrial ecosystems.
C) Deforestation usually leads to nutrients such as nitrates/nitrites becoming locked up in the topsoil and unavailable to plants.
D) Deforestation can lead to loss of topsoil.
E) Deforestation can lead to eutrophication of aquatic ecosystems.