2. In a study of eastern red-backed salamanders, a biologist randomly placed seven 1.0m by 1.0m quadrats in a field that measured 100m by 100m. Estimate the population density and size if the biologist found 0, 1, 1, 2, 0, 1, and 3 salamanders in the seven quadrats.

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d