CO2, CO 2, global warming, climate change, greenhouse effect, greenhouse effect gases, emisiones de gases de efecto invernadero, carbon dioxide
Studies, trends, Interviews, Reptiles & amphibians, Ecology - statistics & numerical data, Agriculture - statistics & numerical data, Trees, Trees - physiology, Environmental Pollution - adverse effects, Confidence intervals, Bird migration, Conservation of Natural Resources - statistics & numerical data, Endangered Species - statistics & numerical data, Env...