Among the most threatened habitats in north america are flood plains. researchers are interested in knowing whether the proportion of birds, reptiles, and amphibians present in flood plains is independent of location. they randomly select several flood plain locations and count the birds, reptiles, and amphibians found in each location. which hypothesis test would be most appropriate for such a study?

Abeaker of water was heated and then placed on a bench in the laboratory. the water cooled until it was the same temperature as the air in the laboratory. which of these explains the mechanism by which the water cooled? a. heat energy was transferred from the water to the air. b. water molecules from the water formed warm water currents. c. the water molecules absorbed energy from the molecules in the air. d. the water released radiation until it contained no heat energy.