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04Populations,_Commu..
04Populations,_Commu..

... can tolerate only minor changes in environmental conditions  found in very specific places and would not survive outside these places  Specialized organisms can tolerate the changing conditions of light, moisture, and temperature along the shores between high and low tides  Few can survive the to ...
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Interactions of Living Things

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Biology Pre-Learning Check

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Standard 6: ECOLOGY – REVIEW OF BASICS

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How Many Invasive Species Are There in Texas?

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Ecosystems and the Biosphere

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... 3. Review questions- number each one and answer on a separate sheet of paper. You do not need to rewrite the questions. 1. Describe the characteristics of a community & how interspecific interactions affect the dynamics of populations (p 742) 2. Explain 5 different aspects of ecological niche of hip ...
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... the top only get a certain amount of energy, because most energy is lost as heat and waste material. What do we call this rule? ...
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Review sheet for Week 24 Test What are PRODUCERS

< 1 ... 170 171 172 173 174 175 176 177 178 >

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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