earned
to get money or other items for completing a task
wasted
used when it was not needed
organization
an organized group of people with a particular goal
protect
keep safe from harm or injury
prevent
keep something from happening
encourage
offer support or advice to someone so they will do something
register
to sign-up for something (e.g., sports, clubs)
ecosystem
living things that share a physical environment
helpless
unable to defend or protect yourself
pollution
a harmful or poisonous item in the environment
