abandoned

bag

bin

bottle

box

camping

can

clean

concept

conservation

container

convolute

dirty

disposal

eco

ecologically

ecology

empty

environment

environmental

filled

forest

full

garbage

green

junk

litter

outdoor

outthrust

package

park

picnic

plastic

pollute

polluted

pollution

problem

recycle

recycling

refuse

reuse

rubbish

trash

volunteer

waste