Question

The wind and rain brought ___ into the river. Over time, that material may form layers and harden into rock.

Answer 1

The answer is sediment.
There are three types of rocks: sedimentary, igneous, and metamorphic. The only one that would make sense here is sedimentary because the question states a rock that is made from layers is formed which describes a sedimentary rock.

Answer 2

The wind and rain brought sediment into the river.

Rocks:

A rock  is any naturally occurring solid mass or aggregate of minerals.

There are three types of rocks:

• sedimentary,
• igneous, and
• metamorphic.

The only one that would make sense here is sedimentary as it is given in the question that  a rock that is made from layers is formed which describes a sedimentary rock.

Find more information about sedimentary rocks here:

brainly.com/question/14021434