Answer:
1. primary cause of human-created carbon emissions = burning fossil fuels
2. destroys natural carbon sinks leading to more carbon dioxide in the air = deforestation
3. emits methane from decomposing matter = waste disposal in landfills
Step-by-step explanation:
1. "Fossil fuels" are nonrenewable resources that are considered essential for the operation of many factories and industries. Burning them accounts for most of the carbon emissions on Earth, and this leads to "global warming."
2. "Forests" are considered "carbon sinks" because they have a role of absorbing the carbon dioxide in the atmosphere. Cutting down the trees (deforestation) makes forests barren. It then leads to more carbon dioxide in the air.
3. Waste disposals in landfills contribute to the amount of methane that is released into the atmosphere. Methane is considered a potent greenhouse gas that affects people's health.