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CH 5 sec 1
CH 5 sec 1

... Ecosystems are a network of interactions between living things and the environment Each organism has a means of getting food, water, living space ...
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Definitions - Interactions in the Environment These are the current

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... Almost 40 species of plants and animals in the United States have gone extinct since 1980 ...
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... D. detritivore Food chains start with a primary producer, then primary consumer (herbivores), then secondary consumer (carnivores), tertiary consumers, and will ultimately end with decomposers (detritivores) 23.) Which of the following is an abiotic factor that could affect population size? A. amoun ...
Ecological Pyramids - Broken Arrow Public Schools
Ecological Pyramids - Broken Arrow Public Schools

... 4. Decomposers An organism that feeds on dead material and causes its mechanical or chemical breakdown. For example: Fungi and bacteria are decomposers. 5. Ecosystem All the living organisms interacting with each other and the non-living characteristics of an area. 6. Habitat A native environment of ...
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... • Carbon is the building block of life. – The carbon cycle moves carbon from the atmosphere, through the food web, and returns to the atmosphere. – Carbon is emitted by the burning of fossil fuels. – Some carbon is stored for long periods of time in areas called carbon sinks. ...
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Lake ecosystem

A lake ecosystem includes biotic (living) plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions.Lake ecosystems are a prime example of lentic ecosystems. Lentic refers to stationary or relatively still water, from the Latin lentus, which means sluggish. Lentic waters range from ponds to lakes to wetlands, and much of this article applies to lentic ecosystems in general. Lentic ecosystems can be compared with lotic ecosystems, which involve flowing terrestrial waters such as rivers and streams. Together, these two fields form the more general study area of freshwater or aquatic ecology. Lentic systems are diverse, ranging from a small, temporary rainwater pool a few inches deep to Lake Baikal, which has a maximum depth of 1740 m. The general distinction between pools/ponds and lakes is vague, but Brown states that ponds and pools have their entire bottom surfaces exposed to light, while lakes do not. In addition, some lakes become seasonally stratified (discussed in more detail below.) Ponds and pools have two regions: the pelagic open water zone, and the benthic zone, which comprises the bottom and shore regions. Since lakes have deep bottom regions not exposed to light, these systems have an additional zone, the profundal. These three areas can have very different abiotic conditions and, hence, host species that are specifically adapted to live there.
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