EARTH SYSTEMS QUICK CHECK ANSWERS:

1. lithosphere
2. Earth’s axis is tilted 23.5 degrees from a true vertical orientation.
3. the equator
4. Volcanic eruptions eject sulfur dioxide, which is converted to sulfuric acid, which then reflects incoming energy from the sun back to space, therefore cooling the surface of Earth.
5. broken coral reefs

this is 100% correct as of the current moment, I don't know if people will see this or not though :/

It looks like you have provided the correct answers for the Earth Systems quick check. However, keep in mind that my training data only goes up until September 2021. Therefore, I cannot guarantee that this information will remain 100% correct in the future. Additionally, as an AI, I am unable to determine if other people will see your response or not.

Based on the provided information, here are the step-by-step answers to the Earth Systems Quick Check:

1. What is the name of the solid outermost layer of the Earth?
Answer: The solid outermost layer of the Earth is called the lithosphere.

2. What causes Earth's seasons?
Answer: Earth's seasons are caused by the tilt of its axis, which is currently tilted 23.5 degrees from a true vertical orientation.

3. Where is the sun's energy most concentrated on Earth?
Answer: The sun's energy is most concentrated at the equator, which receives direct sunlight due to its position on Earth.

4. Explain how volcanic eruptions can affect Earth's climate.
Answer: During volcanic eruptions, sulfur dioxide is ejected into the atmosphere. This gas undergoes chemical reactions and forms sulfuric acid, which then reflects incoming solar energy back into space. This reflection of energy cools the surface of Earth.

5. What is an example of a human activity that causes harm to coral reefs?
Answer: One example of a human activity that causes harm to coral reefs is the process of breaking or damaging coral reefs.

Please note that while the provided answers appear to be correct, it is always recommended to double-check with your course materials or teacher to ensure accuracy.