ecosystems pack 5 Flashcards

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1
Q

biosphere

A

beginning a community that changes over time

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2
Q

what are within the biosphere

A

numerous different ecosystems

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3
Q

ecosystem

A

a community of living organisms and their physical environment in an area which is self-sustaining

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4
Q

habitat

A

the environment with a distinct set of conditions where a species of a group of species live

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5
Q

community

A

populations of living things interacting with each other in a habitat or ecosystem

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6
Q

population

A

a group of interbreeding organisms of the same species living together in the same area at the same time

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7
Q

abiotic

A

non- living / physical factors of the same environment

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8
Q

biotic

A

loving factors of the environment

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9
Q

how can an ecosystem be identified

A

a functional unit that tends to be self sustaining

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10
Q

abiotic factors

A
  • solar energy input
  • rainfall
  • temperature
  • water oxygen content
  • wind speed
  • soil (pH, moisture)
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11
Q

biotic factors

A
  • inferspecific competition
  • intraspecific competition
  • predation
  • tramping
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12
Q

what are anthropogenic factors

A

the abiotic / biotic factors arising from human activity

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13
Q

niche

A

the role that an organism plays in a habitat, if the individuals/ species share the same niche they will compete until one out competes the other

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14
Q

if two different species live in the same habitat and have the same role in the habitat they are said to share

A

an ecological niche

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15
Q

what will happen if two species are adapted to the same niche

A

they compete with eachother

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16
Q

how can two species share the same habitat

A

occupy different niches

17
Q

why does a particular species live in a particular habitat

A

as it’s adapted to it and so able to survive and reproduce there

18
Q

examples of abundance and distribution of organisms in a habitat are controlled by the complex interaction between abiotic and biotic factors

A

1) poor weather reduces survival rate of one species it has a knock on affect
2) change in soil pH may affect survival rate of bacteria
3) trees affect abiotic