Earth's history is characterized by

unpredictable systems that can't be analyzed

invulnerability to anything that humans try to change

static conditions that haven't changed since the Earth was formed

long periods of fairly stable conditions interrupted by abrupt and major changes

Question

Earth's history is characterized by
	
unpredictable systems that can't be analyzed
 	
invulnerability to anything that humans try to change
 	
static conditions that haven't changed since the Earth was formed
 	
long periods of fairly stable conditions interrupted by abrupt and major changes

danjs · Answer

Just guessing, the last one since i know there were a few mass extinction events.

tylermckinney16 · Answer

So you think its D?