To prevent cross-contamination, ready-to-eat foods should be stored on the: a. middle shelf b. bottom shelf c. floor d. top shelf

So i have a lot of answers answered but it says i still need to answer more questions. why is it doing that? how many questions need to be answered?

When lifting heavy loads off the ground, the majority of the weight should be lifted by which of the following? a. arms b. legs c. back d. stomach

When do people generally experience rapid growth for a second time? a. between the ages of 3 and 9 b. between the ages of 9 and 12 c. between the ages of 13 and 20 d. between the ages of 25 and 29 which action occurs in the third stage of cell division? a. the nuclear material of cell is copied exactly. b. the nuclear membrane disappears. c. the cell forms two nuclei d. the nuclear material separates, with half moving to either side of the cell.