tropical rain forest
broadleaf forest near the equator
savanna
african grassland with trees
estuary
partly enclosed by land; where freshwater and sea water mix
tundra
low-growing plants at high latitudes or elevations
boreal forest
high-latitude forest where conifers dominate
endemic species
evolved in one region and remains there
ozone
good up high, bad nearby
deforestation
tree loss alters rainfall patterns and is difficult to reverse
biological magnification
results in the highest pollution level at the top trophic level
desertification
caused by poor agricultural practices such as overgrazing