What part of the circulatory system allows for diffusion of gas, food, and waste

What are hormones? a. they are minerals needed for proper bone formation. b. they are the parts of the body targeted by endocrine glands. c. they are substances needed for muscle and nerve activity. d. they are substances released by endocrine glands.

When data collected on the performance of a healthcare facility suggests that quality standards have not been met, what is one method that can be used to correct the problem?

In summing we use which law of motion