which two processes both increase the amount of carbon dioxide in the atmosphere

The two processes that increase the amount of carbon dioxide in the atmosphere are:

1. Combustion of fossil fuels: Burning fossil fuels such as coal, oil, and natural gas for energy production, transportation, and industrial activities releases large amounts of carbon dioxide into the atmosphere. This process adds significant amounts of CO2 to the natural carbon cycle and is a major contributor to climate change.

2. Deforestation: When forests are cleared for agriculture, logging, or urban expansion, the carbon stored in trees and vegetation is released into the atmosphere as carbon dioxide. Since trees absorb CO2 during photosynthesis, deforestation disrupts the natural balance and can lead to higher concentrations of CO2 in the atmosphere. Additionally, the loss of trees reduces the Earth's capacity to absorb carbon dioxide through photosynthesis.