In this text, readers make (a)   by observing photographs of various mystery (b)   . This is similar to the practice of (c)   who (d)   the actual (e)   and fossils of animals.

• inferences

• mouths

• scientists

• observe

• skulls

Answer explanation

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3.S.U3.2

When scientists study animals, they often observe the teeth found in skulls.

• 
• 

Answer explanation

Ray Bandar was a scientist, researcher, teacher, naturalist, and artist. He had collected more than 7,000 bone specimens, primarily skulls. The collection now resides in the Academy of Sciences.

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3.S.U3.2

Different animals have very different mouths.

Different mouths need to do _________

kinds of things.

Answer explanation

From the Education Resource Library: National Geographic Explorer Paola Bouley defines and explains the differences between herbivores, carnivores and omnivores.  …

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3.S.U3.2

What is the meaning of the word structure within this text?

• Tooth size helps us figure out if the animal was a predator.

• Tooth shape helps us figure out what the animals ate when it was alive.

• Tooth color helps us figure out if the animal was in good health.

Answer explanation

Does the structure and function of animal teeth fascinate you? You may consider becoming a veterinary dentist!

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3.S.U3.2

Match the following photographs of animals to the correct animal name.

• toucan

• 
• willet

• 
• horse

• 
• gavial

• 
• gray wolf

• 

Answer explanation

EXPLOSIVE BRAIN POWER!

Congratulations!

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3.S.U3.2

Match the following photographs of animal skulls to the correct animal name.

• gavial skull

• 
• toucan skull

• 
• willet skull

• 
• gray wolf skull

• 
• horse skull

• 

Answer explanation

SMILE!

Your brain is sensational!

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3.S.U3.2

Choose 3 correct answers.

The author added this diagram to show 3 different

• Structures of teeth.

• Functions for getting food.

• Shapes of teeth.

• Needs to keep teeth clean.

Answer explanation

YOU ROCK!

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3.S.U3.2

The vocabulary word, survive means to

• chase prey

• hunt meat

• stay alive

Answer explanation

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The different structures of adaptive traits in teeth are important for getting food and helping the animal be

• less likely to survive.

• more likely to survive.

Answer explanation

DELICIOUS ANSWER!

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Traits that help an organism survive in its environment are called ________ traits.

Answer explanation

Did you know...

Aviva, from Wild Kratts, is a biomechanical engineer? She creates all of her Creature Power Suits using an organisms' adaptive traits!

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3.S.U3.2