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group of organisms so similar to one another that they can breed and produce offspring |
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group of individuals that belong to the same species and live in the same area |
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group of different populations that live together in a defined area |
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the total amount of living tissue within a given trophic level |
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first growth that occurs on surfaces where there is no soil. |
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growth after a disturbance like a flood or fire. Plants grow back because the climates are different. |
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What happens to the remainder of heat lost? |
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It is eliminated by heat. |
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How is competition reduced between organism? |
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preying on different food, in different niches. |
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all NON-living parts of an ecosystem |
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all LIVING things of an ecosystem |
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number of individuals per unit area |
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density, geographic distribution, growth rate, age structure |
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individuals in a population reproduce at a constant rate. (the larger the population, the faster they grow) |
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restrains growth of a population. Ex.(drought, scarce food, space, predation) |
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density dependent limiting factors |
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affect large dense population (competition, predation, disease) |
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converts nitrogen into ammonia. |
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bacteria converts nitrates into nitrogen gas |
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Movement of energy and nutrients |
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Definition
energy flows in one direction and nutrients are recycled |
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Definition
the average, causes a wide range of environmental condition that shape our communities |
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What is caused by unequal heating in the Earth's surface? |
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Definition
Earth is tilted on its axis, sun strikes the surface at different angles. |
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produce a large surface area and where water enters the plant |
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female structure on a conifer |
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filament stage of a moss plant |
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branching, covers a large surface area, holding soil |
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female structure that produces a single egg |
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male structure that produces flagellated sperm (have tails) |
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seedless non-vascular pants. (moss) |
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top of sporophyte, filled with spores |
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male pollen grain of a conifer |
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brown dot found on the underside of a fern's leaf, made up of sproangia. |
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opening in egg where sperm must pass through |
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under upper epidermis, densely packed cells with lots of chlorophyll |
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a plants response to touch |
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Nastic movement is regulated by? |
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plants response to gravity |
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loosely packed cells with air spaces connected to the exterior surfaces |
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flower that has both male AND female parts |
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a plant's rapid movement in response to stimuli. |
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surround stomata and control the opening and closing by responding to water pressure |
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plant tracks the sun's light as it moves across the sky |
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flower that has only male OR female parts |
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a slow movement in response to stimuli |
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body plan has mirror images |
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concentration of brain-like structure in the interior area |
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concentration of brain-like structure in the interior area |
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top, transports blood from the tail to the head |
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bottom. transports blood from head to tail |
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body divided into smaller sections |
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specialized segments that secrete a mucus ring and surround the fertilized eggs to form a cocoon for incubation. |
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What is the name of an Annelid heart and how many do they have? |
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thin tissues that separates each segment holding skin around earthworm's inner organs |
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bristles found on the ventral surface used for traction movement |
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What kind of worm is Platyhelminthes? |
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sensory structures on the anterior end of the planarian that senses light and dark |
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mouth of a planarian is located? how does it eat? |
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Definition
planarian's eat through pharnyx. Located on the tip of the pharnyx |
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head of tape worm with suckers to attach to the intestinal wall of its host |
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contains hooks and is found on the tip of scolex |
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two pairs of leg per segment, round body, day-eaters, secrete toxin from skin, herbivore |
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one pair of legs per segment, flat body, poisonous claw-like appendages, nocturnal, carnivores |
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spiders, mites, ticks, scorpions |
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How many eyes do a spider have? |
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manipulate food, three pairs. |
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large claws- for defense. |
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appendages attach to the tail used to hold eggs during reproductive seasons. |
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where are gills attached to on the crayfish? |
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excretory ORGAN, of arachnids that extracts waste from circulatory fluid |
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excretory GLAND, on some arachnids found on the base of some legs. discharges wastes. |
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holes in abdomen attach to tracheal tubes allows oxygen to enter |
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tubes that transport oxygen |
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excretory organ that release excess water |
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segmented bodies, jointed appendages, exoskeleton |
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a group of related organisms of the same species that work together for the benefit of the group |
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a process that changes the shape and forms a new body |
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a network of fluid-filled canals connected to tube feet. uses are: feeding, movement, respiration and excretion |
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cells that contain calcium, regulate the crayfish equilibrium when it is upside down |
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food chain levels, what level are consumers at? |
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two species live closely together |
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divided based on depth and distance from the shore: intertidal zone, coastal zone, and open ocean |
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resource partitioning (warblers) |
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eat same food, different niches. |
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the central part of the body which contains the mouth, anus, madreporite, and gonopores and from which the rays radiate. |
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