What is the role of the respiratory system? a. to bring water into the body b. to bring oxygen into the body c. to bring carbon dioxide into the body d. none of the above

Apossible explanation for a set of facts that can be tested by further investigation is called

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

What are atoms of the same element with varying number of neutrons