What is the top number in blood pressure called?

When analyzing tree rings, what do scientists assume a thin ring indicates?

If the dimensions of a cube-shaped cell with a length,height, and width of 1 micrometer were to double, what would be the cell's new ratio of surface area to volume? a.3 to 1 b.4 to 3 c.1 to 2 d1 to 6

9. which of these are considered standard precautions for dealing with bodily fluids? check all that apply wearing gloves when providing patient care that may involve contact with blood checking a patient's chart to determine if there is a harmful blood disorder wearing aprons, masks, and protective eyewear when needed transporting a patient from a bed to a wheelchair to take him or her to a procedure washing hands when required cleaning equipment thoroughly before using it on the next patient