It is mined for minerals (salt, sand, gravel, and some manganese, copper, nickel, iron, and cobaltcan be found in the deep sea) and drilled for crude oil. The ocean plays a critical role in removing carbon from the atmosphere and providing oxygen.
http://marinebio.org/oceans/ocean-resources/
Not for long. We use oxygen for cellular respiration and plants make oxygen so if all the plants died, we would only have so long to live
False is your answer have a good day :)
