An experimental design in which the test units are assigned randomly and the experimental group is exposed to the treatment but the control group is not, and no pretest measure is taken is called the ) one-shot case studyb) random groupc) static groupd) manipulated treatment studye) posttest-only control group design

What period of history refers to the time when people did not have written records

For 50 pointsfredrika's science teacher asked her to bring in three abiotic items from her backyard ecosystem. which of the following groups of items should she bring? a. a lightning bug, a plug of grass, and a wormb. a smooth rock, some red dirt, and an empty bird's nestc. a ladybug, a spider, and some water from a mud puddled. a caterpillar, a pine cone, and a piece of a robin's egg

What are the five traits of a civilization?