What is this?
take public transportation
What is this?
ride bikes
What is this?
recycle
What is this?
pick up litter
What is this?
write a letter
What is this?
start a compaign
What is this?
hold a town hall meeting
What is this?
million
What is this?
species
What is this?
plant
What is this?
population
What is this?
endangered
What is this?
extinct
What is this?
Earth
What is this?
protect
What is this?
hunting
