Question:
Use evidence from the fact that echo is when sound reflects off of a surface to answer the following question. "When you scream in an empty room, you hear an echo due to the noise"

Answer:
bouncing off stuff

Question:
Use evidence from the fact that digestion is when an organism takes in nutrients from food into itself by eating to answer the following question. "Digestion is when an organism takes in nutrients from what?"

Answer:
sustenance

Question:
Use evidence from the fact that as the smoothness of something increases , the friction of that something will decrease when its surface moves against another surface to answer the following question. "Skidding causes friction, as seen in"

Answer:
Nascar races