It can cause extreme damage not only to the biosphere but the geosphere also. It can kill, injure, and destroy the biosphere.
As I said in your other post/question on the same topic, you have to rephrase your question in order for us to help you. =)
The answer is the second one: Many Mongolians are pastoral nomads who raise livestock for a living.
The planet's average surface temperature has risen about 1.62 degrees Fahrenheit (0.9 degrees Celsius) since the late 19th century, a change driven largely by increased carbon dioxide and other human-made emissions into the atmosphere.4Most of the warming occurred in the past 35 years, with the five warmest years on record taking place since 2010. Not only was 2016 the warmest year on record, but eight of the 12 months that make up the year — from January through September, with the exception of June — were the warmest on record for those respective months. https://climate.nasa.gov/evidence/