Clastic, chemical, and organic are the three main types of
a. igneous rocks.
b. plutonic rocks.
c. sedimentary rocks.
d. metamorphic rocks. user: which rock is formed from organisms?
a. granite
b. coal
c. quartz
d. olivine

Clastic, chemical, and organic are the three main types of (c. sedimentary rocks)
which rock is formed from organisms? (b. coal)

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Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.