Fred's dog was classically conditioned to salivate at the sound of a bell. fred then repeatedly paired the bell with another stimulus, a whistle. now whenever he blows the whistle, his dog salivates, even though the whistle has never been paired with food. this example illustrates

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