Input: Answer this question:
Scientists conduct investigations to answer questions. Before making a valid conclusion, scientists must
OPTIONS:
- collect relevant evidence
- tell people about the data
- publish results from the investigation
- discuss the investigation with other scientists
Answer: collect relevant evidence

*Question*: Sugar is composed of carbon, hydrogen, and oxygen. Sugar is an example of which of the following? OPTIONS:
- an atom
- a compound
- an electron
- a mixture
*Answer*: a compound

question:
Which of the following best describes a role of mushrooms in ecosystems?
OPTIONS:
- capturing energy from sunlight
- consuming living plant material
- taking energy from animal hosts
- breaking down dead plant material

answer:
breaking down dead plant material

[Q]: Which of the following has the least momentum?
===
OPTIONS:
- a 0.5 kg mass with a 1000 m/s velocity
- a 1 kg mass with a 100 m/s velocity
- a 10 kg mass with an 11 m/s velocity
- a 100 kg mass with a 2 m/s velocity
****
[A]: a 1 kg mass with a 100 m/s velocity

question below:
Mammals must eliminate waste products that their bodies produce. Which organ helps mammals eliminate bodily waste?
OPTIONS:
- appendix
- kidney
- pancreas
- stomach
answer below:
kidney

The main function of hormones in the human body is to
OPTIONS:
- identify and destroy microbes
- regulate body functions
- transport blood to cells
- store energy
regulate body functions