man-made or natural?
man-made
man-made or natural?
natural
personal or public things?
personal
man-made or natural?
natural
personal or public things?
public
man-made or natural?
man- made
air or water pollution?
air pollution
personal or public things?
public
personal or public things?
personal
drought or flood?
drought
water or air pollution?
water pollution
tsunami or earthquake?
earthquake
man-made or natural?
natural
tsunami or tornado?
tsunami
drought or tornado?
tornado
flood or earthquake?
flood
personal or public things?
personal
man-made or natural environment?
man- made
personal or public things?
public