Fill in the blanks below using the following words to model the flow of energy from the sun to a human: cow, grass, human, sun

Grass uses energy form the to grow. A then eat the grass. When a eat a hamburger, energy is again passed up the food chain.​

This is a mixture that has the same composition throughout.

Which of the following is a compound? a. carbon b. oxygen c. hydrogen d. water

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.