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Chapter 4 Flashcards

(22 cards)

1
Q

Whats ecology

A

The study of interactions of organisms and their environment

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2
Q

What is an ecotone

A

The transition area between ecosystems

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3
Q

What is an ecological niche

A

an organisms role or job in an ecosystem

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4
Q

Whats a habitat

A

The the organisms live

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5
Q

What is a relationship

A

All interactions with other species in the ecosystem

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6
Q

Whats a nutrition

A

The organisms method of obtaining food

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7
Q

What is a competition

A

When two species have the same niche or job

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8
Q

What are biomes

A

An area that is classified according to the species that live in that location

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9
Q

What are Canadas 4 terrestrial biomes

A

Tundra (cold)
Taiga (boreal forest)
Grasslands
Temperate deciduous forest

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10
Q

What are Canadas 2 aquatic biomes

A

Freshwater(lakes rivers and ponds)
Marine (saltwater oceans)

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11
Q

Whats littoral zone

A

The water that goes to the lake’s edges

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12
Q

Whats the limnetic zone

A

The lakes open sunlit water

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13
Q

Whats the profundal zone

A

Where all the water below the depth of light penetration

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14
Q

What factors can limit a population size and determine biodiversity

A

Soil
Availability to water
Temperature
Amount of sunlight

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15
Q

What are the Soil layers

A

Litter (o horizon): the top organic
layer made with leaf litter
Topsoil (a horizon): below o horizon
Subsoil (b horizon): below a horizon
Bedrock (end of soil C and R horizons)

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16
Q

What is biotic potential

A

Describes number of offsprings that a species could produce with unlimited resources

17
Q

What is the biotic potential regulated by four factors

A

Birth potential
Capacity for survival
Breeding frequency
Length of reproductive life

18
Q

What is carrying capacity

A

The number of individuals of a population that can be supported in equilibrium by and ecosystem

19
Q

What is density independent

A

Effects the population no matter the population density (fire, tornado)

20
Q

What is density dependent

A

Effects population because of population density (competition)

21
Q

What is the law of minimum

A

State that the nutrient in the lest supply is the one that limits growth

22
Q

What is the law of tolerance

A

States that an organism can survive within a particular range of an abiotic factor