Why does clearing forests using fire contribute to the greenhouse effect? (1 point)
• Burning trees returns stored nitrogen to the atmosphere as nitrous oxide.
• Burning trees returns stored methane to the atmosphere as a gas.
Burning trees returns stored carbon to the atmosphere as carbon dioxide.
• Burning trees returns stored oxygen to the atmosphere as a gas.
Burning trees returns stored carbon to the atmosphere as carbon dioxide.
What is the main reason why raising cattle contributes to global warming? (1 point)
• Cattle eat grass, which reduces the amount of plants that remove atmospheric carbon dioxide.
• Cattle have microbes in their stomach that produce methane during digestion.
Cattle release carbon dioxide as they breathe, similar to humans.
• Cattle store nitrogen, which is released as nitrous oxide as they die.