(That’s the paragraph)
What is the main point of paragraph 2?
A. How photosynthesis affects humans food supply
B. How carbohydrates cause weight gain humans
C. How humans and other animals use radiant energy from the sun
D. How carnivorous animals hunt and get energy from prey

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.