Read the paragraph and then answer the question. "a giraffe has to stretch its neck to reach leaves for food. over time, the giraffe's neck gets longer from being stretched. the giraffe will then pass on this elongated neck to its children." which scientist would have agreed with this explanation? a. linnaeus b. lamarck c. malthus d. darwin

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

Which accurately compares concave and convex lenses?

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90