Biotic forces can cause changes to the surface of Earth. Which is the best example of living organisms causing weathering?
A: Tree seedlings growing and forming cracks in rocks.

In May 2007, wildfires burned more than 350 square miles of habitat in Florida and Georgia. Intense fires like this one can temporarily remove nitrogen, phosphorus, and potassium in area soil. What most likely happens in the burned areas until organic decay replenishes the lost nutrients?
A: The carrying capacity of the soil for plant growth is reduced.

Gregor Mendel was the first to show that organisms had traits that are passed on from parents to the next generation. In order for the scientific community to accept Mendel's discovery, others had to
A: duplicate the results of his experiments.

A student is designing a model of the solar system and writing a report. She is trying to be as accurate as possible. Which statement should she include in her report?
A:
The orbit of Mars is similar to the orbit of Saturn.