Question

1. animals release carbon dioxide through ____________. 2. __________ is another word for burning fuel. 3. __________ removes carbon dioxide (co₂) from the atmosphere. 4. in the carbon cycle, __________ stores carbon long - term in coal, oil, and natural gas. 5. decomposers breakdown __________. 6. the four earth systems that exchange carbon are: __________, __________, __________, ____________

Explanation:

1. Animals release carbon dioxide through respiration. This is a fundamental biological process where they take in oxygen and release carbon dioxide.
2. Combustion is another word for burning fuel. It is a chemical reaction that releases energy and carbon dioxide.
3. Photosynthesis removes carbon dioxide (CO₂) from the atmosphere. Plants use sunlight, water, and carbon dioxide to produce glucose and oxygen.
4. In the carbon cycle, fossilization stores carbon long - term in coal, oil, and natural gas. Over millions of years, dead organisms are transformed into these fossil fuels.
5. Decomposers breakdown dead organisms. They play a crucial role in recycling nutrients back into the ecosystem.
6. The four Earth systems that exchange carbon are: atmosphere (where carbon dioxide is present), biosphere (living organisms), geosphere (rocks, soil, fossil fuels), and hydrosphere (water bodies).

Answer:

1. respiration
2. Combustion
3. Photosynthesis
4. fossilization
5. dead organisms
6. atmosphere, biosphere, geosphere, hydrosphere