Improvements in geological observation technologies have made it easier for scientists to locate resources in Earth's crust. These technologies have allowed for an increase in availability of which resource?
A: fossil fuel

What is the main reason we can see the Moon?
A: The Moon reflects the light from the Sun.

A student flips a coin four times. It lands "heads" up three times. The student concludes that the coin will land "heads" up three times out of four. What will make the conclusion more accurate?
A: flipping the coin twenty more times

Which of the following has the greatest effect on the ability of soil to hold water?
A:
the size of the soil particles