Answer:
Rust is a chemical reaction (oxidation) of iron that occurs over a period of time as the bare metal surface comes in contact with oxygen present in the air or water. Rust "eats" away the metal, rendering it weak and fragile. ... Avoid contact with water or moisture.
Explanation:
I don't think human beings will ever extinct
cause they are smart and adaptive
Three factors that affect magma viscosity are temperature, composition, and presence of dissolved gases.
I would say the answer is C
hope this helps :)