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.

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

not too sure but maybe in the hot springs.