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?

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.

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal responds by in order to its core temperature?

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?