The conclusion is that the pillar corals are heavily dependent on the sunlight in order to survive and flourish.
In warm waters, other organisms compete with them, and the pillar corals are out-competed, so the sunlight is blocked, partially, or totally, so they are not able to function.
Because they are not able to function, the pillar corals are dying out, thus living space for other organisms to take their niche in the ecosystem.
The nutrients in topsoil that support plant growth come from <span>plant and animal matter that is decaying.
When a plant or an animal is decaying, it releases nutrients which are beneficial for the soil. If the soil is healthy and thriving, it means that the new plants which are about to appear will grow more healthily and produce their 'goods.'
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The statement is true, all of these are important natural resources in the Caribbean islands. Most important are definitely the waters, climate and beaches, these three make the tourism possible and bring in the biggest income in the Caribbean countries. Even though they do have some exports like the coconuts, zinc and manganese, these islands are heavily dependent on imported goods and resources.
It's A. I don't know why, but I got it right, so
