Hypothesis: Increasing water temperature had no effect on the fermentation rate of yeast. Experiment: Compared yeast in room-temperature (22°C) water to yeast in lukewarm (45°C) water. Measured CO2 production. What statement is the most appropriate conclusion for David to write?

Isolated volcanic peaks on the ocean floor are

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.

What is the starting point in replication called