Answer:
b. Plants and animals exchanging gases with the atmosphere
Explanation:
It allowed him to realize that the mass of an atom is concentrated at its center because the atoms mostly went through the foil but some were deflected. He also realized that an atom probably wasn't just empty space and scattered electron and it had a positive center.
No, why? Cause if you're winding up the clock it's basically doing what it needs to do. So there's no need for batteries.. I hope my sad sentence make sense :p
1 Cellular Respiration
2 Photosynthesis
3 Photosynthesis
4 Cellular respiration
