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48 Cards in this Set
- Front
- Back
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What word describes the mammals, fish, birds and plants that live in an environment?
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biotic
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When compared to a community what is a population?
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the biotic and abiotic elements of an area
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What are the 5 levels of organization in the environment, from first to fifth level?
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organism,population, community, ecosystem, biosphere
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Is water abiotic?
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yes
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What are organisms that can make their own food called?
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producers
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Dog eats grass.
Dog is eaten by coyote. What is this called? |
a food chain
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What does it show when one food web arrow goes from prairie dog to coyote?
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coyote eats prairie dog
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What is the largest population that an environment can support?
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carrying capacity
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What is young wasps eating its host the tomato hornworm an example of?
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parasitism
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Who is the predator when a bird eats a worm?
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the bird
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What is grass that gains energy from the sun an example of?
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produces
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Why, in a food web, do arrows point in just one direction?
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they show how energy goes to the animal that is eating
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Why do limiting factors determine an area's carrying capacity?
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because animals need resources to survive
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What are two examples of commensalism?
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1. two members of the same species fight over who gets certain foods
2.members of different species try to take over a certain nesting area |
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What is the lowest lev el of environmental organization that tree male egrets would all belong in together?
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population
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What level of organization would scientists be studying if the studied the egrets, herons, marsh crabs, and cord-grass, but not the water or rocks in a salt marsh?
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community
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What are herbivores, carnivores, and omnivores?
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consumers
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What are animals that eat a variety of meats, fruits and vegetables called?
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omnivores
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What is an animal that catches and eats another animal called?
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predator
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What are organisms on a food web that have arrows pointing away from them and no arrow pointing toward them called.
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producers
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Organisms on the food web that have arrows pointing toward them but no arrows pointing away from them are what?
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nothing shown eats them
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What does an arrow between two organisms mean?
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energy flows from one organism to another
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What would be the best way to gather data to investigate what kind of ants are in your backyard?
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observe the ants in your yard
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What are you using when you answer questions by doing an activity that includes careful observation?
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experimentation
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What is the first step of a scientific investigation?
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asking a question
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What is making measurements with tools such as thermometers a kind of?
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observation
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What is a controlled experiment?
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a test of only one factor at a time
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What is the purpose of using scientific methods?
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to answer questons
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What is the next step after an hypothesis?
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gather data to test the hypothesis
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How do most animals get the carbon they need?
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by eating plants
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What process breaks down organic matter and returns carbon dioxide and water to the environment?
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decomposition
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Why do organisms need nitrogen?
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to build proteins and DNA
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What do most animals get nitrogen from?
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eating other organisms
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Primary succession may begin in an area composed of what?
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bare rock
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What is an example of a forest growing back after a forest fire?
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secondary succession
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What effect does biodiversity have on a forest?
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it makes destruction by insects less likely
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During what process is rock slowly transformed into soil?
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Primary succession
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What is a cause of nitrogen fixation?
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lightning
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What is a pioneer species?
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lichens
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How does secondary succession differ from primary succession?
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Secondary succession occurs in an area that has soil
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Why is the carbon cycle important to living things?
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it converts nitrogen to a usable form
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What is a statement about climax species?
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They grow slowly and are well-adapted to an environment
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What does a mature community always have?
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has well- adapted organisms
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What is true about ground water?
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it is an important part of the water cycle
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What is true about cycles of matter?
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matter moves between the environment and living things
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Which substance must be chemically transformed before it can be used by plants?
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nitrogen gas
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How does carbon from the environment become part of living organisms?
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photosyhthesis
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What best describes a plant that is suited to being a pioneer species?
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grows quickly; makes many seeds
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