Answer:
Demographics can include any statistical factors that influence population growth or decline, but several parameters are particularly important: population size, density, age structure, fecundity (birth rates), mortality (death rates),
Explanation:
Answer:
C) increase thier calorie intake enough to fuel their workouts.
Explanation:
Energy comes from the intake of calories, and a balance of it is required, especially when one is carrying out vigorous activites and exercises; this prevents occurences of blackouts and faintings due to a lack of energu (lack of calories).