Hernando De Soto was the first known explorer
Delta can also be an easy answer plus it is easy to remember
The knowledge that can be gained from this is Knowledge about how genes work in vertebrates. Option D
<h3>What is genetic engineering?</h3>
Genetic engineering has to do with the procedure by which the genetic composition of an organism is modified. This is often carried out in a laboratory so as to produce new species of an organism or for scientific research purpose. We know that interaction of genes is determined by Mendelian genetics and the patterns of inheritance have been the constant subject of study.
As such, if a Zebrafish have been genetically engineered to glow in the dark, the knowledge that can be gained from this is knowledge about how genes work in vertebrates. We know that fish is an aquatic vertebrate because it possesses back bone as does other vertebrates (presence of vetebral column).
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Acid drainage, especially acid mine drainage is the process whereby water combines with the sulfide minerals like pyrite which is iron plus sulfur (high in sulfur) to produce sulfuric acid (iron plus sulfur plus oxygen so oxidation of the sulfide like pyrite is part of the process) which is deleterious to the environment so where mine waste contains pyrite then it must be isolated and neutralized with say limestone or submerged in water to prevent the development of sulfuric acid.
