Increase public transportation use
Turn off lights when leaving a room
Unplug electronics when not in use
All of the above
6. True or false? Organisms that cannot adapt to changing climate or move away from their environment may become extinct.
Sediment cores
Ice cores
Tree rings
Spaceships
Energy
Humans
Carbon dioxide
Hurricane
Short-term heatwave
Tornado
A 30-year drought
Oxygen
Nitrogen
Cellulose
1600
1800
1900
2000