Name it and categorize it.
Carbon monoxide - man-made
Name it and categorize it.
Landslides - both
Name it and categorize it.
Radiation leaks - man-made
Name it and categorize it.
Earthquakes - natural disasters
Name it and categorize it.
Volcanic eruptions - natural disasters
Name it and categorize it.
Tornadoes - natural disasters
Name it and categorize it.
Oil spills - man-made
Name it and categorize it.
Acid rain - man-made
Name it and categorize it.
Thunderstorms - natural disasters
Name it and categorize it.
Sink holes - both
Name it and categorize it.
Tsunamis - natural disasters
Name it and categorize it.
Drought - both
Name it and categorize it.
Forest fires - both
Name it and categorize it.
Floods - both