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- 1. Multiple ChoiceWhich of these organisms is a producer in a marine ecosystem?fishgullalgaeworm
- 2. Multiple ChoiceWhat happens to a population and to competition when there is a reduction of living space?The population expands and competition intensifiesCompetition strengthens while the population contracts.The population increases as competition decreasesCompetition weakens and the population decreases
- 3. Multiple ChoiceWhich BEST determines the number of wolves that can live in an area?the amount of snow in the area each yearthe number of birds that live in the areathe number of trees in the areathe amount of food available in the area
- 4. Multiple ChoiceKudzu vines grow by climbing and wrapping around trees. Trees covered by kudzu can die because they are starved of sunlight. What type of relationship exists between the tree and the kudzu growing on them?competitionmutualismparasitismpredator-prey
- 5. Multiple ChoiceWhere is the largest amount of energy in a food web?hawkgrassmousegrasshopper
- 6. Multiple ChoiceWhich BEST explains the importance of nitrogen in the cycling of energy and matter?Nitrogen increases protein production in plants.Nitrogen decreases protein production in plants.Nitrogen decreases the effectiveness of photosynthesis.Nitrogen increases the effectiveness of photosynthesis.
- 7. Multiple ChoiceIf wolves prey on deer for food, what will MOST LIKELY happen to the deer population if wolves are removed from an area where deer live?The population of deer will increaseThe population of deer will decrease.The population of deer will remain the same.The population of deer will become extinct.
- 8. Multiple ChoiceWhere do plants get most of the energy they need to live and grow?watersoilairsunlight
- 9. Multiple ChoiceIn a food pyramid, which BEST explains why the number of organisms decreases from one trophic level to the next?Consumers at the lower level require more energy than the top-level consumers.Consumers at the top level require more energy than the lover-level consumers.The consumers are feeding on larger organisms that have less energy.The consumers are feeding on smaller organisms that have less energy.
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