Questions 1. From the cited examples, what can you infer about the "artificial factors"
2. What was the most significant barrier to expansion of species from eastſito west?
3. Compare and contrast the natural changes and artificial changes of the environment.
(base your answers on the text).
4.
because
(any information from the text)
makes me think of
5.
because
reminds me of

Match the item to the definition: indirect correlation, correlational research, correlational research, covary, pearson correlation coefficient, pearson correlation coefficient, direct correlation a. used to describe the relationship between two or more naturally occurring variables b. determines whether scores on the two variables covary c. whether two variables vary or change together d. denoted by the symbol "r" e. provides information about the sign (direction) and magnitude(strength) of the linear relationship. f. when the correlation is positiveg. when the correlation is negative