Input: Answer this question:
Which is a major function of the vacuoles found in cells?
OPTIONS:
- to store water and food for cells
- to release energy for cells
- to control what enters and leaves cells
- to provide protection for cells
Answer: to store water and food for cells

*Question*: Why do scientists perform multiple trials of the same experiment? OPTIONS:
- to include additional variables in the experiment
- to complete the steps of the experiment in less time
- to find a less expensive way to conduct the experiment
- to increase the likelihood of accurate experiment results
*Answer*: to increase the likelihood of accurate experiment results

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

answer:
kidney

[Q]: The ocean water near the equator absorbs more heat throughout the year than ocean water near the North Pole. Which of the following best explains this difference?
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OPTIONS:
- The equator is closer to the Sun.
- The equator has higher sea levels.
- The equator receives more direct sunlight.
- The equator rotates more quickly on Earth's axis.
****
[A]: The equator receives more direct sunlight.

question below:
Why do doctors suggest that people get a flu vaccine each year?
OPTIONS:
- Viruses replicate more rapidly over time.
- Viruses can mutate from year to year.
- Vaccines are absorbed by the body after a year.
- Vaccines get stronger over time.
answer below:
Viruses can mutate from year to year.

question:
In any physical or chemical process, what two quantities are always conserved?
OPTIONS:
- matter and total energy
- light and acoustic energy
- density and thermal energy
- gravity and potential energy

answer:
matter and total energy