Final answer:
Scientists focus on greenhouse gases released during food production because they contribute to the Earth's warming and have negative impacts like air pollution and extreme weather conditions.
Step-by-step explanation:
Scientists focus on greenhouse gases released during food production because they contribute to the Earth's warming. Greenhouse gases like carbon dioxide, methane, and nitrous oxide trap heat in the atmosphere, causing global warming. This leads to various negative impacts such as air pollution, extreme weather conditions, and respiratory diseases. It is important to address these emissions to mitigate the effects of climate change.