7. environmental factors that can contribute to our epidemic of obesity include all of the following except? a. portion sizing b. increased sedentary lifestyles c. fewer physical education classes required d. genetics. 10. what are some external influences that may lead a person to be at risk for anorexia? a. inherited genetic factors from parents b. our society's cultural reinforcement to be thin c. counting all the calories of the food they eat d. eating fruits and vegetables

7. D. Genetics

10. B. Our society's cultural reinforcement to be thin.

Explanation: 7:

The obesity is a condition in which the body concentrates fats and excess weight which increases the health risks. The epidemic can be define as the frequency of occurrence of a particular disease or disorder. The genetic make up of an organism is an acquired inherited material, which is not an environmental factor.

Explanation:10.

Anorexia is an eating disorder which is characterized by the abnormal low weight of the body. It involves an intense fear of gaining weight, thus the person takes the low diet. This can be because of the external influence of the society and peers to be slim and fit. So that the person does not feel ashamed of from the excess weight gain.

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explanation:

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the sphincter muscles at the end of the digestive tract is the anus.