Tags

airports - (6)

apes - (6)

bicycles - (6)

bush - (6)

cartography - (6)

cleanup - (6)

combustion - (6)

copper - (6)

depletion - (6)

dikes - (6)

horses - (6)

landslides - (6)

palms - (6)

rabbits - (6)

revolution - (6)

seismology - (6)

sharks - (6)

tigers - (6)

transcendentalism - (6)

airplanes - (5)

algae - (5)

brain - (5)

cotton - (5)

drugs - (5)

ethnobiology - (5)

factories - (5)

gorillas - (5)

lichens - (5)

malnutrition - (5)

national socialism - (5)