activist

altruism

bag

bin

bottle

care

charity

cleaning

cleanup

collect

community

conservation

dirty

disposal

dump

eco

ecology

ecosystem

environment

environmental

forest

garbage

gloves

green

hands

help

junk

litter

man

nature

people

person

plastic

pollution

protection

put

recycling

rubber

rubbish

save

social

stack

teamwork

throwing

trash

volunteer

waste

work