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The correct answer is- Proton
A proton is approximately 2,000 times heavier than an electron. In most cases, atoms have an equal number of protons and electrons. However, because protons are so much heavier than electrons, the electrons do not make a significant contribution to the mass of an atom.
Answer:
1. humans
2. birds
3. trees/plants
Explanation:
1. more die as time goes on
2. all die at a constant rate
3. most die at the beginning but those that survive live long
