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20 Cards in this Set
- Front
- Back
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Which best describes an ecosystem? |
a. a system where populations stay the same b. anywhere there is only one kind of organism c. a system where living and nonliving things interact d. a place where there is always rain, soil, sunlight and air |
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All of the following are nonliving parts of an ecosystem EXCEPT |
a. plants b. soil c. sunlight d. water |
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In which type of ecosystem is made up of swamps and marshes? |
a. desert b. prairie c. deciduous forest d. wetlands |
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Which of the following is a producer? |
a. deer b. grass c. hawk d. dog |
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What is a decomposer? |
a. a dead animal or plant b. the waste of dead animals and plants c. a consumer that gets energy by eating only plants d. an organism such as an earthworm that eats the remains of animals |
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A hawk and an owl compete for the same food in the same ecosystem. How are they both able to succeed? |
a. the hawk eats the owl b. the owl changes its diet c. one animals moves to a different habitat d. one hunts at night, and the other hunts during daytime |
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A meadow has too many rabbits. What would help balance this ecosystem? |
a. more rain that grass needs b. more foxes that eat rabbits c. fewer foxes that eat rabbits d. more grass for rabbits to eat |
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What is most likely to happen if most of a population of animals dies of disease? |
a. the food web will stop b. the decomposers will die c. the food web will change d. the producers will also get the disease |
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Which of these things are passed along in a food chain? |
a. herbivores b. ecosystems c. air and sunshine d. energy |
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How would an ecosystem change if the rabbits that were the main prey for foxes because sick and died? |
a. the foxes would find new prey b. the number of foxes would increase c. the number of foxes would decrease d. the foxes and rabbits would compete for food |
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what could scientists tell from a fish fossil found in a desert? |
a . that fish is now extinct b. fish once had legs to travel c. fish once lived in dry places d. the desert was once a sea or a lake |
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What can we learn when we look at fossils? |
a. we can learn how living things change over time b. we can learn how plants make food c. we can learn what organisms have never been classified d. we can learn how many beetles there are on earth |
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What might be a reason an animal become extinct? |
a. its is a predator b. it produces oxygen c. its habitat is destroyed d. it adapts to its environment |
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What shows us that life on Earth has not always been the same and about how the environment was long ago? |
a. natural events b. producers c. fossils d. rocks |
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Which would cause an ecosystem to change quickly? |
a. a fire b. a lake drying up c. a climate change d. a lake becoming a marsh |
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What is the difference between the niche and the habitat of an egret? |
Niche - Job Habitat - home, place where it lives |
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How does a beaver change its environment? Describe how other plants and animals in the environment are affectd. |
Cuts down trees and dams up the river. The fish down stream may die because not enough water. The plants above the dam will get flooded and die. |
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The diagram below shows the sequence of how energy flows through a food chain. Sunlight -> Corn plant -> Mouse -> Fox 1. Describe how the corn plant gets its energy. 2. Describe how the fox gets its energy. |
1. Corn plant gets its energy from sunlight. 2. Fox gets its energy from the mouse. |
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Suppose you find the fossil skull of an animal with sharp teeth like those of a wolf. What might you INFER about what this animal ate? |
It ate meat because a wolf is a carnivore and eats meat. |
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How do we know wooly mammoths lived long ago? |
They have found fossils. |
