What rock contains the hard remains of marine organisms made from minerals in seawater?

Chemical sedimentary rocks

Explanation:

Chemical sedimentary rocks are rocks that consist of microscopic marine organisms that precipitated on the ocean floor. An example of a chemical sedimentary rock that is formed like this is Limestone.

They are formed when the mineral constituents of the sea water, inorganically precipitate. other examples include halite (rock salt), sylvite, baryte and gypsum.

(4,-2)

explanation:

6x+4y=16

-6x-9y=-6

-5y=10

y=-2

x=4

answertemperature;