In which of the following ways does the body respond to an increase in skeletal muscle cell activity? by increasing the respiratory rate by increasing the heart rate by converting white bloods cells to red blood cells by producing less hemoglobin

In case of increase in skeletal muscle cells, the cells respire more to get more oxygen and glucose and removes carbon dioxide more quickly. This is achieved by increasing the heart rate, rate of breathing. The increased heart rate increases the rate of blood flow around the body. The increased rate of breathing increases the rate of gaseous exchange in the lungs.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex