Answer:
The answer is 3. Double Helix.
Hey there!
The answer is B, Pangaea. This was the name for the large continent that supposedly existed before we had all of our separate continents today (all of which were part of Pangaea).
Hope this helps
Two examples of how the biosphere supports life is by reducing the amount of harmful radiation to reach the surface of the earth. It also gives oxygen for animals to breathe
Aerobic respiration takes place in the mitochondria and requires oxygen and glucose, and produces carbon dioxide, water, and energy.
anaerobic respiration also produces energy and uses glucose but it produces less energy and does not require oxygen.
