Answer:
C. Adding Oxygen to the atmosphere
Explanation:
Most living things need oxygen (Including humans) to survive
Hello There!
Caste systems were used a lot in the past. I'm not quit sure how to explain it in depth but i'd say it's a ranking of how important you are. The 'untouchables' would have to do jobs that no one else in the caste would do.
Traditionally in the caste system, untouchables perform types of jobs such as sweepers, washers and disposing dead bodies.
Hope This Helps You!
Good Luck :)
- Hannah ❤
As far as I remember the answer is: Over long periods of time, tectonic forces can cause rocks to fold because of <span>B. Shear Stress.</span>
This is geography not math
