PRAXIS- Science

Where in the milk way galaxy is our solar system located?

In the middle of one of the arms 

In its early stages, the earth looked much different than it does now. How would you differentiate between the two stages?

The early earth was a lot hotter and much larger than it is now

How long after the earth was formed did it take to achieve the state we recognize now?

About 10-20 million years

What is a common theory of how the Earth and other planets were formed?

From a larger interstellar cloud of dust and gas coalescing

The earth was under continuous bombardment by meteorites and comets as it formed and continued to take shape. What was the significance of comets hitting the Earth during that time?

Comets enriched the earth with gases such as methane, carbon dioxide, nitrogen, and ammonia

A student sees a funnel-shaped cloud extending from a thunderstorm cloud toward the ground, and debris begins to swirl at the surface. What is the best description of this event?

A tornado is forming or has formed

A community notices that a nearby lake has frequent algae blooms and fish die-offs. Which human activity is most likely contributing to this problem?

Fertilizer runoff from lawns entering lakes