Dr. smalley's research study showed that girls had less self-confidence at age 13 than at age 17. dr. smalley was not willing to conclude that the finding would be true for boys. dr. smalley thus appeared sensitive to the issue of internal validity. external validity. statistical significance.

Which action allowed farming to be expand into west texas? a inventing a new plow b developing dry farming c increasing demand for cotton worldwide d declining of the cattle ranching industry

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

The colors at sunset are usually the result of raindrops