Why did Russia leave world war 1? A- they were not able to mobilize and get ready for war completely
B- me hey were beaten and went home
C- they were too far away from the fighting to participate
D- they had a revolution at home and the leadership changed and they wanted to quit fighting

D:they had a revolution at home and the leadership changed and they wanted to quit fighting

Explanation:

Russia had already mobilized (a is wrong)

They weren't beaten nor were they losing (b is wrong)

They weren't too far away (C is wrong)

The communists had taken over in the October revolution with Lenin as there leader and he had promised to end the costly war with germainy with a treaty

on my last question

biological/genetic factors means they were born or predisposed to have something. nothing can really change it, and you can't really do much to "fix" it. it isn't something learned

these are the biological factors:

adrian is relatively tall and he is on the basketball team

(adrian can't ever stop being tall or force himself to be tall. likely one or both of his parents are tall as well and they passed on the tall gene. he probably does basketball because he is tall)

the rest are environmental/cultural factors. these are things that are taught to us. for example, cynthia wasn't born saving pocket money, her family most likely taught her this (environmental factor)

hope this !