Which of these is a characteristic of index fossils?
a/found in the topmost rock layer.
b/found in many layers of the same rock.
c/have already established relative age.
d/are limited to a particular geographic location. (hu)

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.

zxndjdjxjjxik no f cnnxn k is s dksoozkdkxjxjxjxj

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101