When a light source like a star or group of stars is moving away from the earth, the wavelengths of the light change, and a is observed. a. blue shift b. red shift c. ozone effect d. all of the above e. none of the above

Which of the following statement is false ? a.batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c.do not stack batteries on top of each other)d.never put a damaged battery in a dumpster. i