Coastal wetlands that feature short, gnarled trees with arching prop roots are called a.

mangrove forests.

b.

kelp forests.

c.

salt marshes.

d.

tide pools.

which

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.