Answer:its y
Explanation:its going down with the most force, the end of the hill is the fastest if that makes sense
Explanation:
atom changes from a ground state to an excited state by taking on energy from its surroundings in a process called absorption. The electron absorbs the energy and jumps to a higher energy level. In the reverse process, emission, the electron returns to the ground state by releasing the extra energy it absorbed
2mm=2,000,000 nm
2,000,000/25=80,000
The answer is 80,000 polio viruses
