The sun and the Earths core
Coral reefs are a very important component of the ocean’s ecosystem because they support sea life, such as crabs and sea turtles. in fact, over four thousand species depend on the survival of the reefs, which are being destroyed by bleaching. more must be done immediately to save the reefs.
development along the coastal regions has significant negative effects on coral reefs. the reefs are an essential part of the ocean’s ecosystem, and when people build structures on top of them, they are easily damaged because they are so fragile.
If your question is literally how long they could remain without water, the answer is 1-2 days with major side effects, and 3-4 with certain death.
first 421÷ by pi
then the answer divided by 2
you divide the answer by 2 to find the radius because the radius is half the diameter