How are coral reefs formed? what factors are bringing about the large-scale decline of coral reefs around the world? what measures must be taken to prevent future loss of remaining coral reef habitat?

2/6 of be by to 2/6 is to 24/72 ?

Which are evidence of the seafloor spreading? a. molten material b. magnetic stripes c. continental material d. drilled core samples e. ocean water samples

Which of the following best describes the purpose of a nation’s boundaries? a. to limit the movement of goods and people b. to make it easier for cartographers to create maps c. to make the movement of goods and people easier d. to prevent other countries from invading territory