Answer:
Isotopes – caused by varying numbers of neutrons in an element – have many practical uses in our society. ... In geology and archaeology, radioactive isotopes are used to determine the age of a sample while hydrologists can use isotope signatures to distinguish between different groundwater types.
Explanation:
Google. It's a magical place.
your answer is b hope this helps
Answer: B
Explaining: surface currents are caused by wind density affects deep ocean currents
Answer: c. balance
Explanation: Mass is the amount of matter contained in a body.