Answer:
"Carbon-14 dating can determine the age of an artifact that is up to 40,000 years old. Living organisms absorb carbon my eating and breathing." Credit to NDT
Explanation:
Mark as brainliest please >_<
The heart has 4 chambers.
Answer:
a
a process that selects variations to help with survi al and that spreads the variation to more offspring
Explanation:
the weak don't survive the strong thrive