What Makes Up Earth?
the layer of Earth that we live on
crust
to use less of something
reduce
waste that hurts the land, air, and water
pollution
a large fire that happens in a wooded area
wildfire
everything in an area where people, plants, and animals live
environment
to take something old and make it into something new
recycle
something we use that is from the Earth
natural resource
when an overflow of water covers land that is usually dry
flood
the planet we live on
Earth
to save or protect
conserve
trash that people leave in the environment
litter
a process where pieces of soil, rock, or sand are moved by wind, water, or ice
erosion
a part of something that is different from the parts above and below it
layer
to use something again
reuse
the power to do work
energy
to make something different
change