A compound is two or more chemically combined elements. Fore example NaCl, CO2, H2O
Answer:
The rates of decay of radioactive elements
Explanation:
The age of a rock in years is called its absolute age. Geologists find absolute ages by measuring the amount of certain radioactive elements in the rock. When rocks are formed, small amounts of radioactive elements usually get included.
126,720 inches are in 2.0 miles
Answer:
true because the bonds cannot be broken down
