Some natural resources, like oil and natural gas, take a very long time to form. because of this, they are known as non-renewable resources. what is an example of a renewable resource?

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins

In which part of the body is a ball-and-socket joint found?

Do plant cells perform cellular respiration?