Coral islands are made of a. the remains of small marine organisms
b. volcanic magma and ash
c. worn down mountains
d. sand and rock

the awnser is A. The remains of small marine organisms

Explanation:

A. The remains of small marine organisms

Explanation:

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cirrus clouds: lacy or wispy clouds that form at high altitudes it would generally happen before a change in the weather.

the only plants classified as non-seed producers are b) moss, fern, and liverwort!

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