Question

1. based on what you have learned about the carbon cycle (lesson 6), what are some processes that can contribute to an increase in the amount of carbon dioxide in the atmosphere? (2 - 3 complete sentences)
2. how can the amount of carbon dioxide in the atmosphere affect the amount of carbon in the hydrosphere? (1 - 2 complete sentences)

Explanation:

1. Combustion of fossil fuels (e.g., coal, oil, gas) releases large amounts of carbon dioxide. Deforestation reduces the number of trees that absorb carbon dioxide through photosynthesis.
2. Carbon dioxide in the atmosphere dissolves in water (hydrosphere) to form carbonic acid. Higher atmospheric CO₂ levels lead to more CO₂ dissolving in the hydrosphere, increasing its carbon content.

Answer:

1. Combustion of fossil fuels and deforestation contribute to increased atmospheric CO₂.
2. Atmospheric CO₂ dissolves in the hydrosphere, increasing its carbon content.