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| any structure or behavior of an organism that allows it to survive in its environment |
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| a large plantlike group of water organisms |
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| an animal, such as a frog or spadefoot toad, that reproduces in water |
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| a tank for keeping live water plants and animals |
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| environment referring to the two kinds of freshwater environments: standing-water [lakes, ponds, and vernal pools] and flowing-water [rivers, streams, and creeks] |
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| microorganisms that act as decomposers |
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| the actions of an animal in response to its environment |
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| shrimp tiny animals related to crabs and lobsters. Brine shrimp are found in salt ponds and salt lakes |
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| a hole or tunnel dug by a small animal |
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| the highest layer in a forest, where there is a lot of sunlight |
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| an animal that eats only animals |
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| capacity the greatest number of organisms that can be supported [carried] by an area without damaging it |
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| the average or typical weather conditions in a region of the world |
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| the plants and animals in an ecosystem |
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| to rely on or need the same resource as another organism |
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| a demand for resources, such as food, water, or space, by two or more organisms |
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| metamorphosis the cycle of growth changes for an insect. The stages include egg, larva, pupa, and adult. |
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| the amount of a substance, such as salt, in an amount of another substance, such as water |
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| the factors of an environment, such as water, light, air, chemicals, and temperature |
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| an organism that cannot make its own food. Consumers eat other organisms. |
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| experiment a set of compared investigations in which one variable is manipulated by steps while all other variables are controlled or kept the same |
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| a class of mostly aquatic animals with hard, flexible shells |
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| an organism that breaks down plant and animal material into simple chemicals |
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| plant a plant that covers more space or is larger than others and usually has a significant influence on other organisms in the area |
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| a long period of dry weather |
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| a scientist who studies ecosystems |
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| a community of organisms interacting with each other and with the nonliving environment |
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| a vascular plant often found in freshwater aquariums |
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| at risk of becoming extinct |
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| what allows organisms to grow and move |
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| a biologist who studies insects |
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| everything that surrounds and influences an organism. Deserts, forests, and the ocean are environments. |
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| factor one part of the environment. An environmental factor can be nonliving, such as water, light, and temperature. It can be living, such as plants and animals. |
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| to dry up and go into the air |
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| a species that no longer exists |
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| able to support growth and development |
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| any natural or synthetic material used in soil to help plants grow |
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| a form of chemical energy that organisms need to survive |
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| chain a description of the feeding relationships between organisms in an environment |
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| web all of the connected and interacting food chains in an ecosystem. Arrows show the flow of matter and energy from one organism to another. |
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| any remains, trace, or imprint of animal or plant life preserved in Earth’s crust |
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| environment a lake, pond, river, or stream |
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| an action that helps a plant or an animal survive |
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| (plural fungi) an organism that lacks chlorophyll and gets nutrients from dead or living organisms |
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| a group of organisms born and living at the same time |
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| the natural environment of a plant or an animal |
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| a chemical used to kill plants |
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| an animal that eats only plants or algae |
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| range a well-established territory that animals forage for food in year after year |
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| the meaning that you make from your observations |
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| trait a characteristic that is passed down from generation to generation |
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| an animal that has six legs, a head, a thorax, and an abdomen |
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| how living and nonliving components act together in an ecosystem |
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| to water crops by artificial means |
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| a small crustacean with 14 legs that all function the same |
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| forest ecosystem that is home to thousands of different kinds of organisms where kelp seaweed is a main producer |
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| (plural larvae) the wormlike early stage in the life cycle of an insect |
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| cycle the stages in the life of a plant or animal |
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| the condition of being alive |
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| a type of ocean ecosystem, like a kelp forest |
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| anything that has mass and takes up space |
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| a microscopic organism, such as bacteria and some algae |
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| when animals move from place to place with a change in the weather |
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| the process of shedding skin to make room for growing |
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| referring to something that has never been alive or to things that were once alive and are no longer alive |
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| a material needed by a living organism to help it grow and develop |
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| information obtained through your senses |
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| an animal that eats both plants and animals |
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| most favorable to growth, development, and reproduction of an organism |
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| an organism that lives on and gets nutrients from another living organism |
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| a chemical developed to kill animals that are in some way harmful to humans |
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| an oil that comes from the earth |
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| a process used by plants and algae to make sugar |
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| microscopic plantlike organisms in aquatic environments that produce their own food |
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| bug isopod that has a highly domed shape, short legs, and inconspicuous antennae |
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| distribution how plants are spread out or arranged in an area related to environmental factors |
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| the moving of pollen to the female part of a flower |
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| to make an environment unsuitable for organisms because of substances introduced into air, water, or soil |
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| all organisms of one kind that are living together |
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| an animal that hunts and catches other animals for food |
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| environment the set of environmental conditions that an organism appears to choose over other conditions |
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| an animal eaten by another animal |
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| an organism, such as a plant or algae, that makes its own food |
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| an amount of variation or difference |
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| of tolerance the varying conditions of one environmental factor in which an organism can survive |
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| the concentration of salt in water |
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| lake a body of water that contains a high concentration of salt |
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| unable to survive in salty environments |
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| able to survive in salty environments |
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| an animal that eats dead organisms |
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| dispersal the movement of seeds away from the parent plant |
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| the beginning of something, such as where a river starts |
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| bug isopod that is relatively flat with legs that extend a little beyond the edge of the shell and powerful antennae to sense its environment |
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| a group of organisms that are all the same kind |
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| the name for different points of insect development |
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| any identifiable part of an organism |
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| a measure of how hot or cold matter is |
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| a container with plants growing inside |
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| to grow fast and stay healthy |
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| the ability of an organism to survive under a given set of conditions |
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| the layer above the rain forest floor and below the rain forest canopy |
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| pool a shallow, temporary pond |
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| microscopic animals in aquatic environments |
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