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Eberhard Sci. Ch. 3
Eberhard Science Ch. 3
| Question | Answer |
|---|---|
| What is a food chain? | the movement of energy from one organism to another, starting with the sun |
| What is an ecosystem? | All the biotic and abiotic factors and their interactions |
| Give several examples of abiotic factors. | temperature, sunlight, rainfall, soil |
| What are biotic factors? | all the living things in an ecosystem such as plants and animals |
| What is competition in an ecosystem? | the struggle between organisms for food, water, and other resources |
| What is a population? | all the organisms of a particular species within each ecosystem |
| What is a community? | all the different populations of plants and animals |
| What three things might happen to animals that are competing for the same resources? | They might have to move, find another food, or die. |
| Name 5 characteristics of a swamp. | warm temperatures; thick plant growth, little sunlight so small trees and bushes; tall trees with widespread roots, cypress trees and knees; wet-adapted animals like alligators, turtles, ducks, frogs, egrets |
| Name several characteristics of rivers and streams. | moving water (speed determines the type of plants and animals), many plants and animals live in or around such as fish, crayfish, snakes, and insects |
| Name several characteristics of tropical rainforests. | wet, hot climate, wide variety of plants (vines, ferns, orchids) and animals (birds, monkeys), many animals live in trees |
| Name several characteristics of deserts. | dry climate with wide temperature ranges, plants and animals must be adapted to dry conditions (cacti, lizards, scorpions, jackrabbits) |
| Name several characteristics of polar regions. | cold climate with dark winters and light summers, animals adapted to cold (blubber, fur, hibernation, migration) such as reindeer, seals, polar bears, arctic foxes, few plants (mosses, lichens) |
| What are adaptations? | traits or behaviors that help organisms survive in their environment |
| What is migration? | an organism's adaptation of moving to another area |
| What is hibernation? | an organism's adaptation of going into a deep sleep to survive cold weather |
| What is camouflage? | an adaptation in which the animal blends in with their environment |
| What is mimicry? | an adaptation in which one organism looks like another kind to help it survive |
| How do animals detect changes in their environment? | sensory organs |
| What are sensory organs? | any part of the body that receives signals from the environment |
| What sensory organs do bats use to help them find insects to eat? | echolocation |
| What sensory organs do some snakes have that allow them to move around in the dark? | night vision |
| What sense do rays and sharks have that allow them to feel changes in the electricity around them? | electric sense |
| What sense do birds, butterflies, and some whales have that help them find their way? | magnetic sense |
| What adaptations do cactus have? | soft, spongy tissue to hold water, thick waxy cover to keep water inside, sharp spines to keep animals away |
| What adaptation helps some trees keep from losing too much water in the winter? | They lose their leaves. |
| What adaptation do some plants have to attract pollinators? | brightly colored flowers |
| Name 3 ways humans can hurt the environment. | polluting the air, polluting the water, deforestation |
| Name 3 ways humans can help the environment. | cutting down emissions from cars and factories, leaning the water or creating "greenways," replanting trees |
| Name 3 ways organisms can harm the environment. | overgrazing, blocking water flow with beaver dams, kudzu overgrowing environments |
| What is accomodation? | an animal's adaptation to a changing environment by changing its behavior and habits |
| What is extinction? | when an entire species dies out because it can't adapt to changing ecosystems |
Created by:
betheb
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