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A sidewinder snake slithers across the sand.

Pre-K - Higher Ed
A sidewinder snake slithers across the sand.
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A sloth blinks.

Pre-K - Higher Ed
A sloth blinks.
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Getty Images

Gulls land in a sea near the coast of Iceland.

Pre-K - Higher Ed
Gulls land in a sea near the coast of Iceland.
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Getty Images

Bird droppings stain a cliff below a flock of nesting gulls.

Pre-K - Higher Ed
Bird droppings stain a cliff below a flock of nesting gulls.
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A gull bathes in a sea in Iceland.

Pre-K - Higher Ed
A gull bathes in a sea in Iceland.
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Getty Images

A nesting gull cackles near a rock formation.

Pre-K - Higher Ed
A nesting gull cackles near a rock formation.
Stock Footage0:11
Getty Images

A gull nests on a coastal mountain in Iceland.

Pre-K - Higher Ed
A gull nests on a coastal mountain in Iceland.
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Getty Images

A gull soars near an islet along a coast in Iceland.

Pre-K - Higher Ed
A gull soars near an islet along a coast in Iceland.
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A bed bug sits on human skin.

Pre-K - Higher Ed
A bed bug sits on human skin.
Stock Footage0:12
Getty Images

Gulls flock near an islet in a sea along the coast of Iceland.

Pre-K - Higher Ed
Gulls flock near an islet in a sea along the coast of Iceland.
Stock Footage0:50
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An artist makes an ice sculpture.

Pre-K - Higher Ed
An artist makes an ice sculpture.
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Getty Images

Maine Coon kittens play in bowls.

Pre-K - Higher Ed
Maine Coon kittens play in bowls.
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Getty Images

Commuters swipe their cards and walk through the turnstile at a subway station.

Pre-K - Higher Ed
Commuters swipe their cards and walk through the turnstile at a subway station.
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Getty Images

Moose stand in a snowy clearing.

Pre-K - Higher Ed
Moose stand in a snowy clearing.
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Getty Images

Tropical fish swim above coral formations on the floor of the Red Sea.

Pre-K - Higher Ed
Tropical fish swim above coral formations on the floor of the Red Sea.
Stock Footage0:09
Getty Images

Tropical fish swim above rocks and coral on the floor of the Red Sea.

Pre-K - Higher Ed
Tropical fish swim above rocks and coral on the floor of the Red Sea.
Stock Footage0:13
Getty Images

Tropical fish swim near a coral formation on the floor of the Red Sea.

Pre-K - Higher Ed
Tropical fish swim near a coral formation on the floor of the Red Sea.
Stock Footage0:09
Getty Images

A man sweeps trash from the street.

Pre-K - Higher Ed
A man sweeps trash from the street.
Stock Footage0:18
Getty Images

A dragonfly clings to a stem then flies away.

Pre-K - Higher Ed
A dragonfly clings to a stem then flies away.
Stock Footage0:17
Getty Images

A hummingbird flits between flowers.

Pre-K - Higher Ed
A hummingbird flits between flowers.
Stock Footage0:16
Getty Images

A sloth looks around and blinks.

Pre-K - Higher Ed
A sloth looks around and blinks.
Stock Footage0:11
Getty Images

A hand strokes the nose of an alligator as the alligator sits in a pool with its mouth open.

Pre-K - Higher Ed
A hand strokes the nose of an alligator as the alligator sits in a pool with its mouth open.
Stock Footage0:13
Getty Images

A lion cub suckles its mother.

Pre-K - Higher Ed
A lion cub suckles its mother.
Stock Footage0:21
Getty Images

Golden retriever puppies play in a wooded park.

Pre-K - Higher Ed
Golden retriever puppies play in a wooded park.