in the passage, the author states that, "trenches became a necessity as well as
a strategy for winning the war". in what ways does the author support this
statement? use evidence from the text to support your response.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.