How does linear regression differ from analysis of variance

How does linear regression differ from analysis of variance?
Include the title of the study and a citation, then answer the following questions for each study
What is one independent variable? What is the dependent variable?
If there is more than one independent variable, what argument does the researcher make that these variables are independent of one another?
Which of the two studies seems to present the least convincing evidence that the dependent variable is predicted by the independent variable? Why?