How do internal influences differ from external influences? give two examples of each

What does fi stand for in the fitt-vp principle of exercise prescription?

Which of the following are considered general purposes of performing pulmonary function tests (pfts)? 1. the functional status of the lungs 2. the diffusion characteristics of the alveolar-capillary membrane 3. how much and how fast gas can be moved into and out of the lungs 4. the specific diagnosis of pulmonary disease

Is the process by which biological parents pass traits such as hair type or eye color to their children. these traits may affect their well-being and health.