Question 1) Explain how reflection and refraction are similar to each other and different from each other? 2) Which would feel cooler on a sunny day: a black T-shirt or a white T-shirt? Explain why. 3) Which properties of light define light as a wave? Will Mark Brainliest and please only answer if you can. Be 100% positive thank you. Please No Plagiarism someone already did that to answer my questions then just reposted someone else same answer on brianly to answer my questions. Really truly need help.

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.