DRQ Review Section 3

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Largest Rsservoirs of Carbon

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APES Definitions Review Quiz Material Section 3

17 Terms

1

Largest Rsservoirs of Carbon

Carbonate rocks such as sediment, oceans, and atmosphere

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2

Biotic

Living components of an ecosystem

ex. plants, animals, fungus, algae

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3

Abiotic

Nonliving components of an ecosystem

ex. water, soil, minerals, air, light

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4

Producer

Organisms that make their own food

ex. fungus, algae

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5

Autotroph

Photosynthetic life

ex. plants

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6

Trophic levels

Producers→ primary consumers (first order consumer)→ secondary consumer (second order consumer) → tertiary consumer (third order consumer)

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7

Energy flow through food webs

10% of the usable energy is transferred to the next trophic level. Reason: Usable energy lost as heat (2nd law), not all biomass is digested & absorbed, predators expend energy to catch prey (heat and waste)

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8

Primary Succession

Development of communities in a lifeless area not previously inhabited by life and no soil present (ex. receding glaciers, oceanic lava)

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9

Secondary Succession

Life progresses where soil remains

(ex. forest fire, old farmland)

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10

Mutualism

Symbiotic relationship where both organisms benefit

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11

Commensalism

Symbiotic relationship where one organism benefits and the other is unaffected

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12

Parasitism

Relationship in which one organism (the parasite) obtains nutrients to the expense of the host.

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13

Carrying capacity

the number of individuals that can be sustained in an area

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14

R- Strategist

Reproductive strategy in which organisms reproduce early, bear many small, unprotected offspring

(ex. insects, frogs, crocodiles)

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15

K- Strategist

Reproductive strategy in which organisms reproduce late, bear few, cared for offspring

(ex. humans, elephants, lions)

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16

Natural selection

Organisms that possess favorable adaptions pass the onto the next generation

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17

Thomas Malthus

“Human population cannot continue to increase. Consequences will be war, famine, and pestilence (disease)” An economist who hypothesized the potential limiting factors of the human species

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