Afterimages are best explained by the processing theory.

This passage would suggest that sudan might have a a) democracy. b) dictatorship. c) command economy. d) communist government.

Whether or not a given study has the possibility of causing harm to participants:

Though most presidents have claimed affiliation with a christian church, the only roman catholic president has been a) abraham lincoln. b) john f. kennedy. c) george washington. d) franklin d. roosevelt.