Question

Part D

Today, coral reefs cover approximately 284,300 square kilometers, Corals depend on calcium carbonate to build their
skeletons. Some scientists predict that by 2050, only 15% of coral reefs will have sufficient levels of calcium carbonate
required for growth. By these estimates, how many square kilometers of coral reefs will be damaged by low calcium
carbonate levels? Show your calculations,

Answer 1

Answer: 241,655 sq. km

Step-by-step explanation:

100 – 15 = 85 Multiply the area of the coral reefs by 85%: 284,300 sq. km × 0.85 = 241,655 sq. km

this is the sample answer from plato

Answer 2

Answer: 241,655‬ km²

Step-by-step explanation:

If only 15% will have sufficient levels of calcium carbonate, that means that 85% will be damaged by low levels of calcium carbonate by 2050.

Currently there are 284,300 km² of coral reefs.

If 85% are damaged, that would translate to:

= 284,300 * 85%

= ‭241,655‬ km²