Which of the following are environmental factors that can influence whether someone develops osteoporosis? Check all that apply.
age
exercise
gender
diet
ethnicity
stress

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.