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The greatest natural cause for change in pH in a stream is the seasonal and daily variation in photosynthesis. Photosynthesis uses up hydrogen molecules, which causes the concentration of hydrogen ions to decrease and therefore the pH to increase. Respiration and decomposition processes lower pH. For this reason, pH is higher during daylight hours and during the growing season, when photosynthesis is at its peak.
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Is Natural selection a source of genetic variation in a population?
No, natural selection works on that genetic variation presented to it.
Can natural selection occur without variation in a population?
no there is no genetic variation for natural selection to act upon
What type of variation is shoe size?
the variation of shoe size is natural
How does natural selection enhance or reduce the variability of a species?
Natural selection doesn't reduce variation. Variation is regulated by the rate of mutation.Natural selection reduces the chance of bad variation from being passed on and increases the chances for good variation to be passed on.
What affects natural selection?
variation,overproduction, and competition
Differences between organisms of the same species are known as?
Homologous structures. ps go to who's the cutest.com and click on the pie button
How does genetic variation support Natural Selection?
Genetic variation in itself does not 'support' natural selection: it is what natural selection acts upon.
Is Natural selection a source of genetic variation in a population?
No, natural selection works on that genetic variation presented to it.
What characteristic within populations cause natural selection to occur?
Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.
What natural occurring pH 9?
This is a basic pH.
Can natural selection occur without variation in a population?
no there is no genetic variation for natural selection to act upon
What type of variation is shoe size?
the variation of shoe size is natural
What principles includes variation and competition?
Natural selection.
How does natural selection enhance or reduce the variability of a species?
Natural selection doesn't reduce variation. Variation is regulated by the rate of mutation.Natural selection reduces the chance of bad variation from being passed on and increases the chances for good variation to be passed on.
Find the coefficient of variation for first 'n' natural nombers?
I have found the coefficient of variation of the first natural numbers and also other functions.
Is 6 a natural number?
The number 6 is not a natural number on the pH scale if that is what you mean. In fact the number 7 is a natural and neutral number on the pH scale ( on the pH scale number 7 is a green colour.)
Why variation of PH is slow in acidic range?
You probably have a buffer solution and don't realize it
