Why is the ocean salty? How do whales stay warm? What causes tides to rise and fall? How do oil spills affect ocean animals? Now you can discover the answers to these and many otherfascinating questions about the ocean--the earth's last frontier.Janice...
Why is the ocean salty? How do whales stay warm? What causes tides to rise and fall? How do oil spills affect ocean animals? Now you can discover the answers to these and many other fascinating questions about the ocean--the earth's last frontier. Janice VanCleave's Oceans for...