The part of earth where life exists is called the Biosphere .
Potassium
Potassium is a mineral present in food that helps in a series of important body functions such as muscle contractions, nerve impulses, digestion and normal water balance. Consumption of the right balance of potassium-rich foods and beverages supplies the body the potassium it requires as it does not produce potassium by itself naturally. Consumption of too little or too much potassium can lead to serious health problems.
I believe that hybrid zones provide an opportunity to investigate the evolution of reproductive isolation.Hybrid zones are areas where hybrid offspring of two divergent taxa are prevalent and there is a line in the genetic composition of populations from one taxon to the other. A hybrid zone allows researchers to see what happens when closely related species come together. Reproductive barriers may be strengthened or weakened, depending on environmental and genetic factors.
It acts as a bottom liner for the landfill.It protects the organisms under,and around the landfill because if the bottom liner breaks or cracks then the waste would go through it and spread around the surrounding environment.
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A journal could be used as a recording device to share and show proof of scientific data.