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Nocturnal animals are animals that
cannot survive in sunshine.
are active at night.
are usually blind.
One of the main reasons animals are nocturnal is for
safety. It is easier to hide at night.
fun. Life is more interesting at night.
longevity. Animals active a night live more years than animals active in the day.
Some animals' eyes seem to glow in the dark. This is because
they live too close to power plants.
their eyes work as lanterns.
light is bouncing off the "mirrors" in the backs of their eyes.
An owl can see about _____ better than a human at night.
Some examples of nocturnal animals are
chimpanzees, bald eagles, and chipmunks.
beavers, kiwis, and hyenas.
grizzly gears, snow leopards, and mule deer.
Oilbirds are excellent night flyers. They are guided by
an internal radar system.
long antennae that act like whiskers.
the echoes of their screams.
Crepuscular animals are animals that
are very muscular.
are most active at dawn and dusk.
do not have molars.
In the dark, long whiskers can act as
a show of strength to other animals.
a set of sensitive fingertips.
Some night hunters have excellent hearing. Which of the following is true?
An aardvark can hear ants and termites marching along the ground.
Bobcats can hear jackrabbits run over a mile away.
A catfish can hear air bubbles pop at the water's surface.
Dens, trees, and caves are favorite places for night animals to _____ during the day.
Bats navigate by listening to the echoes of their high-pitched squeaks. This is called
The reason many nocturnal animals can see in the dark better than diurnal animals is
their eyes have more rods, and rods collect light.
they have several lenses.
they have no eyelids.
There is only one nocturnal monkey in the world. It is the
What animal is probably the best nighttime flyer?
A flying squirrel
Why is it easier to smell things at night than during the day?
It's cooler at night, and smells travel farther in cool air.
The sense of smell increases when it is too dark to see.
Air is more still at night than during the day, so smells hang in the air longer.
A tapetum is
a kind of "mirror" at the back of the eye.
a kind of potato nocturnal animals like to eat.
a way of measuring how far animals can see in the dark.
When a moth hears a bat coming after it,
it freezes and plays dead.
it begins flying in circles.
it dives for the ground.
Owls can fly silently because
they only eat quiet animals.
the edges of their wings are soft and muffle sound.
they never flap their wings.
In contests between nocturnal hunters and their prey, the winner is
the biggest animal.
the animal that can run the fastest.
the first animal to hear the other one and act.
One thing that helps some predators sneak close unnoticed is
soft pads on the bottoms of their feet.
both A and B.
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