Answer:
Coral reefs are facing many threats such as physical damage, pollution that originates on land, overfishing, coral harvesting, etc
Explanation:
I looked it up on the web, you'll find more of the threats that coral reefs face if you search it up.
Answer:
biosphere is the part of the earth and its atmosphere capable of supporting life while hydrosphere is all the waters of the earth
Explanation:
Answer: Hindu caste system was kinda strict. You couldn't move up at all in the caste system.
Magma. Magma can be made of many different materials, and once it breaches the earth surface it is called lava. Lava is what comes out of volcanoes, magma is what is still underground