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AP Env. Science Unit 1

Study Slideshow

All species interacting with one another and their nonliving environment is called

ecosystem

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the rate at which producers in an ecosystem convert solar energy into chemical energy is called

gross primary productivity

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Energy flow only has 10% efficiency, while 90% of the energy is lost as heat and biological processes. This phenomenon is explained by what principle

2nd law of thermodynamics

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Why is the phosphorous cycle considered a slow cycle

Phosphorous has no gaseous state

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Name an ecosystem that has the highest net primary productivity

estuaries, marshes, swamps, tropical rain forest

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What two variables determine a climate

precipitation and temperatue

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Which area will have the lowest net primary productivity

open ocean, desert

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Which biome has the greatest biodiversity

tropical rain forest, coral reef

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photosynthesis in the ocean is limited to the upper layer where light can penetrate. This layer is called

photic zone

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Warmer water has less living organisms, why?

less dissolved oxygen

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what is resource partitioning

different species using the same resource in different ways

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what biome has plants that are adapted to prevent water loss

desert

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where is the MAJORITY of freshwater found on Earth

ice caps and glaciers

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What does it mean by a "sink"

place that stores the element

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What does it mean by "source"

process that releases element back into atmosphere

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Nitrification is in which step?

3

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