air

background

bad

bag

beach

bottle

brown

coast

conservation

culture

debris

degradation

destruction

development

dirt

dirty

discarded

dry

dump

earth

ecological

ecology

environment

environmental

forest

garbage

global

grass

green

habitat

industrial

industry

landscape

leaf

life

litter

material

natural

nature

outdoors

package

plant

plastic

polluted

pollution

polyethylene

problem

recycling

reusing

rock

rubbish

sea

stone

stream

trash

tropical

used

values

warming

waste

water

yellow