Question: Choose your answer.

Fossil records indicate that Earth was first inhabited by bacteria-like organisms. These organisms
My Answer: were single-celled.

Question: Choose your answer.

Plumes of water vapor have been observed rising from the southern polar region of Enceladus, one of the moons of Saturn. A team of scientists proposed an explanation for the plumes and developed a model. They also published calculations based on their model. These calculations would most likely be used for which purpose in future research?
My Answer: evaluating similar events

Question: Choose your answer.

One key physical process in beach formation is wave action. Sand is deposited on beaches as waves break onto the shoreline and the energy from the wave scatters. Which type of energy is most used by wave action to modify the shape of the beaches?
My Answer: mechanical

Question: Choose your answer.

Which pair together could cause a rainbow?
My Answer:
Sunshine and rain