Which of the following events was not a cause of the russian revolution?

poor living conditions in cities
czar's alexander ii's limited reforms
government policy known as "russification"
adoption of marxism

Answerair masses develop near the equator are warm; tropical air mass

Answermost of the time it would be ground into fine sediment,and sometimes they are carried away from the original location;

None of them. they are likely to occur on any plate boundary

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!