1. The Lucky Pen Peter noticed that every time he used his special pen with green ink, something wonderful would
happen to him. First, he got an A on his history exam. When he loaned his pen to Amy, she later
agreed to go out on a date with him. While he was carrying his pen, he bought a lottery ticket
that later won $2,000. He decided that his pen truly had lucky powers and he put it away so he
wouldn't lose it.
Would this conclusion be derived from a correlational study or an experiment? Why?

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs