| A | B |
|---|
| Icebergs ______ in water. | float |
| Oceans are important because... | fish and animals live there. |
| The ocean floor is made up of... | dirt, clay, sand, and gravel. |
| More things float in... | salt water. |
| When a salt water fish swims up the creek into fresh water it... | blows up because of the fresh water filling it's body. |
| A fish can regulate it's depth by... | filling and emptying it's swim bladder with air. |
| univalve shell | one-piece shell |
| bivalve shell | two-piece shell |
| Icebergs are dangerous to ships because... | they are mostly underwater. |
| Shells are the home of soft bodied marine animals called... | mollusks |
| Which is the only fish without a swim bladder? | shark |
| One way to clean up an oil spill is... | to put a rope around it and throw hay on it. |
