Adélie penguins and crabeater seals both feed on krill. which term best describes the relationship between adélie penguins and crabeater seals? a. competition b. predation c. parasitism d. mutualism

Which notation is used to represent an alpha particle? a. b. c. d.

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

How to tell if a molecule is polar or nonpolar with electronegativity