Earth's Climate _______________

Earth's climate _______________.

A) has been stable over the history of the planet
B) is changing as a result of natural and human processes
C) will stabilize over the next century, according to the predictions of most scientists
D) history is undeterminable because there is no method of studying the climatic history of the planet
E) has been documented to have changed once due to the evolution of green photosynthesizing plants