Q: Which three systems of the human body function together to move and control body parts?

OPTIONS:
- nervous, skeletal, and muscular
- muscular, endocrine, and excretory
- digestive, excretory, and reproductive
- circulatory, endocrine, and respiratory
A: nervous, skeletal, and muscular
Q: Which of the following correctly orders part of a fish's respiratory system from the least complex to most complex?

OPTIONS:
- cells -> gills -> tissues
- cells -> tissues -> gills
- gills -> tissues -> cells
- tissues -> gills -> cells
A: cells -> tissues -> gills
Q: Scientists measured the patterns of spectral lines given off by distant galaxies and concluded that almost all of these galaxies are moving away from Earth. What did the scientists observe directly?

OPTIONS:
- a shift toward longer wavelengths of light
- a shift toward shorter wavelengths of light
- the absence of wavelengths in the visible light range
- the compression of wavelengths in the visible light range
A: a shift toward longer wavelengths of light
Q: Why can a small fire be put out by placing a heavy blanket over it?

OPTIONS:
- This lowers the temperature.
- This makes the flames smaller.
- This absorbs the burning substance.
- This keeps oxygen from reaching the fire.
A:
This keeps oxygen from reaching the fire.