Roal Amunsen was the first.
The answer is D. In caste systems you are born into a certain level of society and cannot change that.
Answer:
C. Forests protect the atmosphere by constantly supplying it with oxygen
Explanation:
Trees and forests help us by cleaning our air, soil, and water.
Hope this helps you! ^^
Oxidation - the breakdown of rock by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface.
