bio Flashcards

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1
Q

abiotic

A

relating to non-living parts of an environment such as sunlight, soil, moisture, and temp.

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2
Q

biome

A

the largest division of the biosphere, which includes larges regions with similar biotic components and similar abiotic components

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3
Q

biosphere

A

the thin layer of air, land, and water on or near earths surface in which all living things on earth exist

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4
Q

biotic

A

relating to living organisms such as plants, animals, fungi, and bacteria

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5
Q

climate

A

the average conditions (eg. precipitation, temp, and humidity) in a large region over 30 years or more

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6
Q

climatograph

A

a graph of climate data for a specific region; the data are usually obtained over 30 years from local weather observation stations

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7
Q

commensalism

A

a symbiotic relationship in which one species benefits and the other is not helped nor harmed

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8
Q

community

A

all the populations of the different species that interact in a specific area or ecosystem

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9
Q

consumer

A

an organsim that eats other organisms

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10
Q

ecosystem

A

a part of a biome in which abiotic components interact with biotic components

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11
Q

elevation

A

the height of a land mass above sea level

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12
Q

host

A

living inside (ex.hookworm inside a dog) the dog would be the host

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13
Q

latitude

A

the distance measured in degrees north or south from the equator.

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14
Q

mutualism

A

a symbiotic relationship between 2 organisms in which both of the organisms will benefit.

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15
Q

parasitism

A

a symbiotic relationship in which one species benefits and another is harmed

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16
Q

predation

A

predator-prey interactions in which one organisms (the predator) eats all or part of another organism (prey)

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17
Q

symbiosis

A

the interaction between members of two different species that live together in a close association

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18
Q

bioaccumulation

A

the gradual build up of synthetic and organic chemicals in living organisms

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19
Q

trophic levels

A

step in a food chain that show feeding and niche relations among organisms

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20
Q

bacteria

A

microscopic living organisms usually one celled, that cam be found everywhere, they can be dangerous and sometimes even helpful

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21
Q

biodegradation

A

the breaking down of dead organic matter by living organisms such as bacteria

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22
Q

biomagnification

A

the process in which chemicals not only accumulate but become more concentrated at each trophic level in a food pyramid

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23
Q

carbon sink

A

a body or process (ex. plants, oceans, soil) that removes carbon dioxide from the atmosphere and stores it

24
Q

carnivore

A

2ndary consumer that eats primary consumers and 2nd consumer too. they are often at the territory level of a food chain

25
Q

cellular respiration

A

process in which both plants and animals release carbon dioxide back into the atmosphere by converting carbohydrates and oxygen into carbon dioxide and water

26
Q

decomposers

A

organisms like bacterial and fungi that break down wastes and dead organisms and change them into useable nutrients available to other organisms

27
Q

deforestation

A

the clearing or logging of forests without replanting

28
Q

dentrification

A

the process in which nitrogen is returned to the atmosphere

29
Q

detrivores

A

consumers that feed at every trophic level, obtaining their energy and nutrients by eating dead organic matter

30
Q

ecological pyramid

A

a food pyramid there are 3 types of them:
pyramid of biomass
pyramid of numbers
pyramid of energy

31
Q

food chain

A

model that shows the flow of energy from plant to animal and from animal to animals

32
Q

food pyramid

A

a model that shows the loss of energy from one trophic level to another; often called an ecological pyramid

33
Q

food webs

A

model of the feeding relationships within an ecosystem; formed from interconnected food chains

34
Q

greenhouse gases

A

gases in earths atmosphere that absorb and trap radiation as thermal energy (ex. carbon dioxide)

35
Q

heavy metals

A

metalic elements with a high density that are toxic to organisms at low concentrations

36
Q

herbivore

A

primary consumers that eat plants

37
Q

keystone species

A

species (ex. salmon) can greatly affect population numbers and the health of an ecosystem

38
Q

nitrification

A

the process in which ammonium is converted into nitrate

39
Q

nutrients

A

substances such as the chemicals nitrogen and phosphorus that are required by plants and animals for energy, growth, development, repair, or maintenance; important components of nutrient cycles in the biosphere

40
Q

omnivore

A

consumers that can eat both plants and animals

41
Q

permafrost

A

ground that stays frozen year round

42
Q

pesticide

A

a general term for chemicals that are used to eliminate pests such as insecticides that kill insects and herbicides that kill weeds

43
Q

photosynthesis

A

a process in which carbon dioxide enters the leaves of plants and react with water in the presence of sunlight to produce carbohydrates and oxygen; photosynthesis also occurs in some micro-organisms

44
Q

producer

A

organisms that produce food in the of carbohydrates during photosynthesis

45
Q

soil degradation

A

damage to soil

for example; as a result of deforestation or the removal of top soil from bare land by water and wind erosion

46
Q

proliferate

A

to increase grow or produce rapidly and often excessively

47
Q

foreign species

A

introduced species

can sometimes become insvasive

48
Q

niche

A

the special role an organism plays in an ecosystem, including the way in which it contributes to and fits into its environment

49
Q

native species

A

plants and animals that naturally inhabit an area

50
Q

adaptive radiation

A

the development of a number of new species from a number a common ancestor; the new species are adapted to inhabit different niches

51
Q

climax community

A

a make community, such as boreal forest, tropical rainforest, grassland or desert that continues to change over time

52
Q

natural selection

A

the process in which, over time, the best adapted member of a species will survive and reproduce. this process makes change in living things possible

53
Q

pioneer species

A

organisms such as lichens and other plants that are the first to survive and reproduce in an area; these organisms change the abiotic and biotic conditions of an area so that other organisms can survive there

54
Q

ecological succesion

A

changes that take place over time in the types of organisms that live in an area

55
Q

habitat

A

the place in which an organism lives (ex. ancestor a burrow)