The lines on the position time graph show the velocities of differnent vehicles which line represents a vehicle moving at constant velocity

they are known to reach a speed of 21 miles per hour

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

explanation:

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