and, but or so

Turtles ______ tortoises have patterns on their shells.

• and

• but

• so

Some creatures have shells _____ others do not.

• and

• but

• so

These creatures have shells ________ their shells protect

them.

• and

• but

• so

A snail has a shell of its own, ________ a hermit crab does

not.

• and

• but

• so

The hermit crab has grown bigger and needs a bigger shell

________ it could not find a suitable shell to use.

• and

• but

• so

Lobsters cannot see very well ________ they use their

antennae to feel where they are.

• and

• but

• so

Mei Lin used some seashells for her art project ________ she

did not pick them from the beach.

• and

• but

• so

The snail sensed danger, ________ it quickly pulled its whole

body inside its shell to hide.

• and

• but

• so

The hermit crab crawled under a new shell ________ it could

rest there.

• and

• but

• so