A square kilometer of forest has roughly two hundred deer. The term used to describe this number would be population density. It is a key geographic term used to describe living organisms in a specific area.
In drinking water, the more turbid it appears, the higher the chance that those using it could end up with gastrointestinal diseases. The water may be having contaminants such as viruses and pathogenic bacteria which are found attached to suspended solids. These solids may interfere with disinfection of the water.
Erosion and effluent from highly urbanized areas contribute to the turbidity of water in those areas. In open bodies of water, organisms such as phytoplankton can contribute to turbidity in the water.
Eurythermic: (of an organism) able to tolerate a wide range of temperatures.
Stenothermic: <span>A </span>stenothermic<span> is a species or living organism only capable of living or surviving within a narrow temperature range.
</span> Euryhaline<span>: (of an aquatic organism) able to tolerate a wide range of salinity.
</span>Stenohaline: <span>(of an aquatic organism) able to tolerate only a narrow range of salinity.
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Excitation-contraction coupling refers to the series of events that begins with the excitation of the sarcolemma in response to stimulation by a neurotransmitter, and results in the release of calcium ions from the sarcoplasmic reticulum.
Hence, option D is the 1st process that starts the excitation-contraction coupling.
