arid

change

climate

contamination

crack

cracked

crisis

damage

danger

dead

death

desert

desertification

desolate

destruction

dirt

dirty

disaster

drain

dramatic

drought

dry

dryness

earth

ecological

ecology

ecosystem

environment

environmental

erosion

global

ground

heat

lake

land

landscape

natural

nature

polluted

pollution

pond

problem

protection

soil

surface

terrain

warming

waste

water

weather