Q: Answer the question

The theory of spontaneous generation was eventually disproved scientifically by
OPTIONS:
- arguments in philosophy.
- chemical analysis of material.
- examining models of the process.
- conducting a controlled experiment.

A: conducting a controlled experiment.

Q: Answer the question

Which geologic feature is evidence that the North American plate once collided with the Eurasian and African plates?
OPTIONS:
- the Appalachian Mountains
- the Mohave Desert
- the Mississippi River
- the Great Lakes

A: the Appalachian Mountains

Q: Answer the question

A ball on a cart is moving at a rate of 2 m/s. The cart suddenly stops and the ball continues to travel in the same direction at the same speed. This is an example of the
OPTIONS:
- law of gravity.
- first law of motion.
- second law of motion.
- third law of motion.

A:
first law of motion.