Which of the following are considered to be a form of clastic sedimentary rock?

a. sea salts
b. minerals precipitates
c. sand, gravel, and silt particles
d. volcanic ashes

places of higher salinity. there are parts of the ocean where hardly any rain falls but warm dry winds cause lots of evaporation. this evaporation removes water – when water vapour rises into the atmosphere, it leaves the salt behind, so the salinity of the seawater increases. this causes the seawater to become denser.

which elements do geologists measure to determine the age of an organism’s remains? check all that apply.

carbon-14

nitrogen

carbon-12