the answer would be C by thr ionic bonding
The theory is the Continental drift, the super-continent is called the Pangaea.
Example of multi cropping is tomatoes+onions+marigold
Answer:
Ozone layer... pollution
Explanation:
The ozone layer is a layer in the atmosphere which provides a barrier between harmful UV rays and the Earth. However, pollution is quickly depleting the layer which in turn creates a higher risk of skin cancers and other conditions caused by harmful UV rays.
