Populations and Communities Notes
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25 terms
Terms | Definitions |
|---|---|
 competition | This limits population size |
| plenty of water | Which of these factors helps a population grow? |
| population densities | You decide to raise mealworms in two identical containers at home. You count the number of mealworms in each container to compare what? |
| trap-mark-release | Which of these is a method used to count a wildlife population? |
| sample counts | Which of these is a method used to count the size of a population in a large area? |
| a reduction in living space | Which of these limits the size of a population? |
| carrying capacity | The largest number of organisms in a species that can live in an ecosystem at one time is called |
| a limiting factor | A drought condition affects an area. Lack of rain is called what for that area's organisms |
| countries with higher birthrates than death rates have growing populations | Which of these is true for human populations? |
| the wolf population has excellent biotic potential. | A population of wolves lives in a region with plenty of food, water, and living space. Which of these is true? |
| about 6 billion | In the year 2000, what was Earth's human population? |
| fern | Which of these organisms is a producer? |
| omnivore | A pig is which kind of consumer? |
| parasitism | Your sick puppy is diagnosed with roundworms. What type of symbiotic relationship do the puppy and the roundworms have? |
| commensalism | Clown fish swim among a sea anemone's tentacles without being stung. What type of symbiotic relationship do the clown fish and the sea anemone have? |
| predators | Consumers that capture and eat other consumers are called |
| 900 | A scientist wants to count the golden eagle population in a forest of 2000 m2. Nine golden eagles are found in a 20 m2 area. What is the estimated size of the population? |
| polar bears | Which of these animals has a habitat in the cold northern regions? |
| biosphere | Earth's surrounding atmosphere is part of its |
| desert regions | Cactus plants are usually found in which environment? |
| an ecosystem | The organisms living in an area and the nonliving features of that environment form what? |
| Mercury | Which planet is closest to the Sun? |
| community | All populations living together in an ecosystem are called a what? |
| population | All the tortoises living in a specific region of a desert ecosystem make up what? |
| a forest floor | A salamander's habitat is which of these? |
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