Combustion of fossil fuels burning of forests, the digestive systems of cattle and sheep, rice paddies, and landfills are all anthropogenic examples of? sources of greenhouse gases barriers to the global conveyor belt initiators to El Nino events barriers to global expansion

The correct answer is: sources of greenhouse gases.<br /><br />Combustion of fossil fuels, burning of forests, the digestive systems of cattle and sheep, rice paddies, and landfills are all anthropogenic (human-caused) sources of greenhouse gases. These activities release various greenhouse gases, such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), into the atmosphere. Greenhouse gases trap heat and contribute to the greenhouse effect, leading to global warming and climate change.