All these statements concerning galaxies are accurate except OPTIONS:
- They contain millions of stars.
- Most can be seen without a telescope.
- They are millions of light-years apart.
- Space contains several billion galaxies.
A: Most can be seen without a telescope.

Why is some food dehydrated for astronauts to eat in space? OPTIONS:
- to make the food less messy to eat
- to preserve the food for extended flights
- to increase the food's nutritional content
- to keep the food from floating off the plate
A: to preserve the food for extended flights

Which type of organism is at the lowest level of the food chain? OPTIONS:
- autotroph
- heterotroph
- carnivore
- omnivore
A: autotroph

Astronomers have determined the surface temperature of stars by studying their colors. What color emission represents stars with the hottest temperatures? OPTIONS:
- blue
- red
- white
- yellow
A:
blue