Answer the question below: Dan is watching sand fall down a small hill. The pieces of sand will be very large or small? Assuming that: Smaller sediments are dropped as the slope becomes less steep.
small

(Question)
Answer the question below: Do electric cars pollute more or less than gas cars more or less? Assuming that: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.
(Answer)
less

Ques: Answer the question below: Eric hears a sound from far away. If this is the first sound he heard, this sound is likely strong or weak? Assuming that: The farther the sound waves travel away from the source, the more spread out their energy becomes.
Ans: strong

(Q).
Answer the question below: Sasha increases the frequency of a wave. This wave now has more or less energy? Assuming that: Higher-frequency waves have more energy.
(A).
more

Ques:Answer the question below: Rich works out every day. Paul does not work out at all. Whose heart expels more blood per contraction, resulting in lower BPM Rich or Paul? Assuming that: When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.

Ans:Rich

Answer the question below: If Jim starts exercising his muscles, would the strength of them increase or decrease? Assuming that: Exercising muscles increases their size, and bigger muscles have greater strength.
increase