A student plants pea seeds in 3 identical pots. Each pot contains 43 seeds. The first pot contains potting soil, the second contains clay, and the third contains sand. The seeds are given the same amount of water and sunlight for 3 weeks. What is the dependent variable in this experiment?

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.