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Ecology

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24 Terms

1

Ecology

the study of interactions between organisms and their environment.

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2

Biotic

all of the organisms that live together and interact with one another

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3

abiotic

all of the physical factors such as water, soil, light, temperature

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4

population

a group of individuals of the same species that live together in the same area at the same time.

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5

community

consists of all of the populations of different species that live and interact in an area

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6

ecosystem

a community of organisms and its abiotic environment.

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7

biosphere

the part of earth where life exists

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8

herbivore

a consumer that eats plants

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9

carnivore

a consumer that eats animals

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10

omnivore

eat a variety of organisms both plants and animals

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11

scavenger

animals that feed on the bodies of dead animals

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12

food chain

represents how the energy in food molecules flow from one organism to the next

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13

food web

Many energy pathways are possible

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14

energy pyramid

the loss of energy at each level of the food chain, has a large base becomes smaller at the top

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15

habitat

the environment in which an organism lives

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16

niche

an organisms way of life

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17

carrying capacity

the largest population a environment can support over a long period of time

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18

prey

The organism that is eaten

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19

predator

the organism that eats the prey

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20

symbiosis

a close long term association between two or more species

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21

mutualsim

A symbiotic relationship when both organisms benefit

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22

Commensalism

A symbiotic relationship when one organism benefits and the other is unaffected

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23

parasitsm

A symbiotic relationship when one organism benefits and the other is harmed

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24

coevolution

a long term change that takes place in two species because of their close interactions with one another

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