Answer:
Explanation:
Constrictive = more old than young (population is getting smaller (constricting)
Expansive = more young than old (population is expanding)
Stationary = equal old/young (population steady)
Radio telescopes have to be much larger than optical telescopes because the wavelengths of radio waves are so much larger<span> than the wavelengths of visible light.
just search it up on Google . . .</span>
It's false
hydrosphere covers 71% of earth
hope this helps
They helped cool off the earth removing heat from its interior. Volcanic emissions have produced the atmosphere and the water of the oceans. Volcanoes make islands and add to the continents. Volcanic deposits are also used as building materials.
If you're referring to streams/rivers of water that run independently of another source in the ocean these are referred to as "currents" and can be very powerful depending on their location.