A student is examining scientific evidence to support the following claim.
"Life is possible because of the unique mixture of gases that cycle through the Earth's spheres."
Which evidence best supports the student's claim?
One piece of evidence that supports the claim that "life is possible because of the unique mixture of gases that cycle through the Earth's spheres" is the fact that different gases such as oxygen, carbon dioxide, and nitrogen are essential for sustaining life on Earth.
For example, oxygen is necessary for respiration in animals, carbon dioxide is used by plants for photosynthesis, and nitrogen is crucial for building proteins and nucleic acids. The cycling of these gases through processes such as photosynthesis, respiration, and the nitrogen cycle allows life to thrive on Earth.
Additionally, the composition of Earth's atmosphere is unique compared to other planets in our solar system, with just the right amounts of gases that allow for the existence of life. This delicate balance of gases is maintained through various natural processes that interact with the Earth's spheres, such as the atmosphere, hydrosphere, biosphere, and geosphere.
Overall, the scientific evidence of the interconnected cycling of gases through Earth's spheres and their importance in sustaining life provides strong support for the claim that "life is possible because of the unique mixture of gases that cycle through the Earth's spheres."