Answer:
i believe it would be the last one "screens remove solid debris, grits and sand"
Explanation:
c) Some species are part of the human natural flora
Explanation:
Please refer to attachment for more information. I tried to write it here, but it was showing an error.
Cheerio :))
The Pa. Fish and Boat Commission wants acid rain gases reduced by 40%
<h3>What is Acid Rain?</h3>
Acid rain is formed by the precipitation of acid in the form of rain due to reaction of two atmospheric pollutants like oxides of nitrogen and Sulphur with rainwater.
The deposition of acids can occur either wet and dry way.
In wet deposition the precipitation removes acids from the atmosphere and place them on earth surface.
In dry method the deposition of gases and pollutants in the form of dust and smoke.
Man-made cause is the emission of gases from industries or by natural way like lightning which release nitrogen oxides and volcanic eruptions release Sulphur oxide.
The pH value of acid rain is around 5.7.
Learn more about acid rain, here:
brainly.com/question/11543614
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According to the research, the primary purpose of membrane channels is to circulate ions, and of membrane pumps is to maintain differences in ionic concentration.
<h3>What are membrane channels and pumps?</h3>
They are pores in the cell membrane through which ions circulate for muscle contraction or membrane potential changes that may depend on a ligand or voltage, depending on whether their opening is determined by the binding of a ligand or by changes of voltage.
In this sense, membrane pumps is the mechanism of active ion transport, consuming energy across a membrane against an electromechanical gradient to maintain differences in ion concentration between the intracellular and extracellular space.
Therefore, we can conclude that according to the research, the primary purpose of membrane channels is to circulate ions, and of membrane pumps is to maintain differences in ionic concentration.
Learn more about membrane channels and pumps here: brainly.com/question/11090806
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You ever play gta5? right under fort zancudo is an esturary and swampy wetland i did this for point
