The correct answer should be because they want to establish a sense of time passing by and things changing over the course of time. Each new era is influenced by the previous one so the way time passes is important because as time passes by things change and the historians monitor it and record it in a chronological order.
Three functions of a unicellular organism is its defense system, reproduction system, and its digestive system.
Applying logarithm to the x axis of the dose response curve is a math trick that will linearize the middle zone of the curve and will allow you to visualize better the EC50 of the drug. Also the numbers on the x axis are easier to write since they are larger when you apply the logarithm to the concentrations.
<span>Lynn Margulis supported the endosymbiotic theory and
studied mitosis in cells. She was an American evolutionary theorist who made
great significance in the symbiosis of organisms in biological evolution. She
is also a developer of the Gaia Theory, which believes that the Earth functions
as a single self-regulating system. </span>
