The relationship of living things to each other and to their environment
Gases like carbon dioxide (CO2), water vapor, and methane in the Earth’s atmosphere that allow sunlight to come through but stop heat from leaving
A measurement of how our activities affect the environment (in units of CO2)
Goods and services that do not hurt or damage the environment
A worldwide increase in the average temperature of the atmosphere
Greenhouse effect
eco-friendly
CARBON FOOTPRINT
Ecology
Global warming