A long ______ to a new home is called a migration.
journey
river
A long journey to a new home is called a ______.
hibernation
migration
Migrating animals generally go ______ between summer and winter homes.
around
back and forth
When people ______, however, they often are changing homes for a long time.
hibernate
migrate
Many mammals, birds, fishes, insects, and other animals move from one place to another at ______ of the year.
certain times
all year round
Animals migrate for different ______. Many migrate to breed or to find food.
reasons
lessons
Most animals migrate across water, land, or air. Many birds and bats in northern parts of the world fly ______ for the winter.
south
back and forth
Some whales swim from cold polar regions to warmer waters in winter.
Yah, it's true.
Nah, it's false.
Other migrations are vertical, or up and down. Mule deer in the western United States travel from higher to ______ parts of the mountains in winter.
shorter
lower
Some earthworms move from the top of the soil to ______ underground.
deeper
taller
Migrating animals can find their way over long and complex routes. They use ______ such as rivers and mountains to tell where they are.
Google Map
land features
Hibernation is a way that some animals ______ the harshness of winter.
shake hands with
deal with
Animals ______ in a safe place and stay there until winter ends.
curl up
run around
Hibernating animals seem almost _______. During hibernation their heart rates and breathing slow down, and their body temperature drops.
dead
crazy
Animals prepare for winter with extra ______. They store fat to keep them alive during the months when they do not eat.
dancing
eating
sleeping
Some hibernating animals collect and store food before hibernating. At times during hibernation, these animals ______ to eat and then return to hibernating.
arise
press down
