Greenhouse gases, such as carbon dioxide, make up less than 1% of Earth's
atmosphere. If Earth's atmosphere
contained 2% carbon dioxide, how would
Earth's temperature MOST
LIKELY change?
Earth's temperature would be
A. much cooler during the day
and at night
Earth's temperature would be
B. much warmer during the day
and at night
Earth's temperature would be
C. cooler during the day, and
warmer at night
D. Earth's temperature would be
warmer during the day, and
cooler at night.