Svarney, Thomas E

Uses a question and answer format to explain how dinosaurs became extinct, what the different species were like, and how scientists study their bones.

Provides information related to oceans, including waterspouts, whirlpools, ocean shelves, tides, and the effects of pollution and global warming.

Provides information related to oceans, including waterspouts, whirlpools, ocean shelves, tides, and the effects of pollution and global warming.