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JLC 4th Gr. Sci Ch 3

JLC 4th Grade Science Chapter 3

adaptations a body part or behavior that helps something live
basic needs food, water, air, shelter
extinction what happens when all members of a species die out
hibernation a dormant, inactive state in which normal body activities slow
instinct an inherited behavior that helps an animal meet its needs
learned behaviors behaviors that were taught to an animal and help it meet its needs
migration animals moving as a group from one region to another
fossil Evidence of a plant or animal that lived long ago
Flat ______ is an adaptation that horses have so they can chew grass. teeth
A basic need plants meet by themselves if they have sunlight food
Name an example of a learned behavior bicycle riding / reading
What happens to an animal's body temperature and heart rate during hibernation The body temperature goes down and the heart rate slows
Infer why birds that migrate in winter arrive at the same destination at different times. They take different routes, some have shorter distances to travel, or they start at different times.
Name an extinct animal auk, woolly mammoth, saber-toothed cat
Which animal's fossil shows it has changed little over time? Turtle
What conclusion can you draw about the shrinking animal population in an ecosystem that is noted to have fewer plants? There is not enough food to support the amount of animals because there are fewer plants. Maybe lack of water, which led to plants dying out. This affects entire ecosystem.
Name 2 things fossil footprints tell scientists 1. how big they were 2. how they moved
Why do you think many of the animals are smaller than millions of years ago? They adapted to changes in their environment
Describe the importance each stage of a tree. Seeds grow into new trees Adult trees provide shade, wood, and fruit Decaying dead trees return nutrients to the soil for new trees to grow.
Created by: jkm1123