Source 3 Survival in Extreme Temperatures PDF

Source!3: Survival in Extreme Temperatures On Planet Earth there are habitats where the temperature can reach above 100° Fahrenheit, and other habitats that stay frozen for more than half the year. How can animals survive in such different environments? Behavioral adaptations help animals survive.
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Source!3: Survival in Extreme Temperatures On Planet Earth there are habitats where the temperature can reach above 100° Fahrenheit, and other habitats that stay frozen for more than half the year. How can animals survive in such different environments? Behavioral adaptations help animals survive.
Migration is a type of behavioral adaptation. Some birds and insects fly hundreds of miles south to avoid cold weather. That is called migration. Not all migration involves flying, though. Earthworms migrate downward. Instead of flying hundreds of miles to a warmer climate, earthworms stay warm in the winter by moving further underground. Migration, or moving temporarily from one place to another, is a behavior that helps animals survive.
If animals can’t or won’t migrate, they can hibernate instead. Hibernation is a deep sleep in which animals use very little energy. Their heart rates slow down, their body temperatures drop, and their breathing becomes slow and deep. To stay asleep for an extended time, animals must eat extra food and store it as fat in their bodies. Alternatively, some animals store the extra food in their shelters to eat after they awaken. Bears, chipmunks and some bats hibernate to avoid to the cold temperatures of winter.
In extremely hot climates, animals survive the heat by avoiding it. Crepuscular and nocturnal animals rest during the day and become more active as the temperature cools. Crepuscular animals are the most active during twilight, when the sun is setting, while nocturnal animals are most active at night. Bobcats and coyotes are animals that avoid the heat of the day and become more active in cooler temperatures.
Some smaller animals avoid heat by burrowing underground. Temperatures under the surface are much cooler than the ground where the sun beats all day. Animals can stay cool by remaining underground, out of the sun. Kangaroo rats and other rodents are animals that burrow to avoid the heat.
Despite the variety of climates on Earth, animals in each habitat have unique adaptations to help them survive. Behaviors like migration, hibernation, being crepuscular or nocturnal, and burrowing help animals survive in extreme temperatures. #$!%&'()*!+,-.!