environmental
activist
bag
bin
black
care
carrying
city
classroom
clean
collecting
ecology
education
environment
garbage
gloves
grass
green
hand
holding
household
human
landscape
lifestyle
litter
male
man
nature
object
outdoors
park
people
person
pick
picking
plastic
recycling
removal
rubber
rubbish
students
trash
two
up
volunteer
volunteering
volunteers
waste
woman
young