Input: Answer this question:
Which type of energy in gasoline is transformed into mechanical energy in a motorcycle engine?
OPTIONS:
- chemical
- nuclear
- magnetic
- electrical
Answer: chemical
*Question*: In the human body, which system functions primarily to defend the body against disease? OPTIONS:
- digestive
- immune
- nervous
- respiratory
*Answer*: immune
question:
Which statement best explains why the Sun and the Moon appear to be about the same size in the sky?
OPTIONS:
- The Sun and the Moon have the same diameter.
- The Moon is larger in diameter and farther from Earth than the Sun.
- The Moon is smaller in diameter and is closer to Earth than the Sun.
- The Sun and the Moon are the same distance from Earth.

answer:
The Moon is smaller in diameter and is closer to Earth than the Sun.
[Q]: A recent study concluded that about 90% of all large predatory fish such as tuna have disappeared from the world's oceans in the past 50 years. Which of these is most likely the direct cause of this loss?
===
OPTIONS:
- Urban development near the coast
- Commercial harvesting from the ocean
- Climate change on Earth
- Acid precipitation over the oceans
****
[A]: Commercial harvesting from the ocean
question below:
A 10 g sample of aluminum and a 10 g sample of iron were each heated by 100 joules of energy. The temperature of the aluminum sample rose 11°C, while the temperature of the iron sample increased 23°C. Which statement best accounts for these results?
OPTIONS:
- Iron is twice as dense as aluminum.
- Atoms of aluminum are smaller than atoms of iron.
- Using equal masses results in similar heat capacities.
- The specific heat of iron is less than that of aluminum.
answer below:
The specific heat of iron is less than that of aluminum.
question:
Which of the following describes a reason why companies irradiate some fruits and vegetables before they are sold to the public?
OPTIONS:
- to improve the flavors by increasing the sugar content
- to speed up the ripening of produce picked too early
- to partially cook the produce before canning or freezing
- to extend the shelf life by killing existing microorganisms

answer:

to extend the shelf life by killing existing microorganisms