Why does Earth’s atmosphere contain more oxygen compared to the other Terrestrial planets?

Which of the following situations would result in the deposition of gravel-sized grains?

Imagine that the atmosphere cooled. This creates more snow. If the ground is covered in more snow, more light is reflected back to space. This leads to further cooling of the atmosphere. What type of feedback does this represent?

In the Southern Hemisphere, currents are deflected to the _______ due to the Coriolis effect. Select the best answer.

During which of the following months would you most likely expect a hurricane to form in the Northern Hemisphere?

Which of the following represents the greatest mass extinction event in Earth’s history?

Based on our best estimates, our solar system likely formed ___________ years ago

Which of the following is a potential problem that may prove to be detrimental to life on Earth due to rising carbon dioxide levels in the atmosphere? Select all that apply

The Universe is estimated to be ___________ years old.

Match the following vocabulary words to their appropriate definitions.