Biodiversity Flashcards

1
Q

What are the four types of diversity in ecosystems

A

genetic diversity
ecosystem diversity
regional diversity
species diversity

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2
Q

Genetic diversity

A

variation of genes within a species

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3
Q

Ecosystem diversity

A

variety of ecological habitats in an ecosystem

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4
Q

Regional diversity

A

variety of landscapes within an ecosystem

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5
Q

Biodiversity

A

the diverse range of organisms, genes, and ecosystems found within the biosphere

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6
Q

What are the factors that affect biodiversity

A

evolution
migration
human impact
exotic invasive species

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7
Q

Macro-evolution

A

evolution of an entire family of organisms in relation to all other organisms

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8
Q

Micro-evolution

A

evolution that occurs within a single population of organisms

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9
Q

What does micro-evolution cause

A

increases or decreases survival rate of organisms

increases biodiversity

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10
Q

Migration

A

movement of organisms from one location to another

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11
Q

What factors affect migration

A

food supply
water supply
climate change
reproduction patterns

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12
Q

What does migration cause

A

temporary or permanent appearance of new organisms in an ecosystem
can lead to loss of native species

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13
Q

Africanized bees are also known as….

A

killer bees

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14
Q

Africanized bees are native to which continent

A

Africa

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15
Q

To where did the killer bees spread

A

south and central America, Mexico, and southwestern US

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16
Q

Are killer bees more likely to swarm than European honey bees

A

yes

17
Q

Are killer bees dangerous to humans

A

yes

18
Q

Food chains

A

single pathway from producer to consumer

19
Q

Food web

A

integrated pathways of feeding in an ecosystem

20
Q

What does a loss of an organism in a food web cause

A

can cause decrease or increase of other organisms

21
Q

What does a reintroduction of a species in a food web cause

A

cause the organisms to re-establish the niche or cause competitive exclusion

22
Q

What does the addition of a new species in a food web cause

A

can lead to competitive exclusion

23
Q

An increase in biodiversity causes

A

an increase in ecosystem stability and increase in productivity

24
Q

A decrease in biodiversity causes

A

a decrease in ecosystem stability and decrease in productivity

25
Q

About how many species are lost everyday due to deforestation of rainforests

A

137

26
Q

About how much of the world’s ten million species are located in the rainforest

A

1/2 of the ten million species

27
Q

Species diversity

A

variety of organisms within an ecosystem