Here are the answers to your questions:
Question 5:
How does the burning of fossil fuels contribute to climate change?
Answer: b - by increasing the amount of carbon dioxide in the atmosphere.
Question 6:
Melting glaciers are causing ____________________ to rise around the world.
Answer: b - sea levels.
Question 7:
True or False: The Greenhouse effect occurs naturally, and it provides the necessary warmth to support Life on Earth.
Answer: True.
Question 8:
How does latitude affect climate?
Answer: d - the closer to the equator the warmer the climate becomes due to direct sunlight.