Answer:
B, A fossil found in rocks from one time period
Explanation:
Fossils are used to determine the ages of rock layers. Index fossils are the most useful for this. Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in. Hope that this helps you :)
Toxins in the soil would enter through the root system first.
Answer: Why?
Explanation: I hope you are okay.
Answer:
You would multiply by two i believe
Explanation:
I used to have to do those and thats what i was taught. Have A Nice Day :)
Answer:
the uncontrolled growth of cells is known as cancer
