Question

1. what distinguishes clastic sedimentary rocks from chemical sedimentary rocks?

clastic rocks are monomineralic, while chemical rocks are polymineralic
clastic rocks are composed of fragments of other rocks, while chemical rocks form from mineral precipitation
clastic rocks form only in oceans, while chemical rocks form on land
there is no significant difference between the two

Explanation:

Clastic sedimentary rocks are made from fragments of pre - existing rocks (clasts) that are cemented or compacted together. Chemical sedimentary rocks form from the precipitation of minerals out of water due to processes like evaporation or chemical reactions.

Answer:

Clastic rocks are composed of fragments of other rocks, while chemical rocks form from mineral precipitation