Category 1
Category 2
100

all the animals, plants, rocks, etc. in the world

nature

100

devices, machines and structures need this to work

energy

200

a lack of the three primary physical needs: food, clothes and housing/shelter.

poverty

200

people are treated the same, regardless of what they look like or where they come from.

equality

300

the process of taking materials and changing them into reusable materials

recycle

300

physical, mental, or emotional well-being.

health care

400

the weather in a certain place.

climate

400

surroundings or conditions where people, animals, plants live.

environment


500

the living and nonliving things in an area (flora and fauna)

ecosystem

500

anything that makes the earth dirty and unhealthy.

pollution