Which phrase best defines a food chain? a the ecological term applied to plants and other photosynthetic organisms that produce glucose 


b organisms that eat other organisms


 c the sum of all actual feeding relationships in an ecosystem


 d a single pathway of feeding in an ecosystem




Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

What’s #16 asking and how do i solve it?