What is the main function of carbohydrates? to provide structure and support to make enzymes to provide short-term energy all of the above

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

Plz quick a natural resource that is replaceable through a cycle in nature or sustainable practice is called a? the subject is science

List the four types of organic compounds found in all living things and explain why they are important.