The Physical Activity Guidelines for Americans provide guidelines specifically for older adults. "Which of the following is not
one of these guidelines"a. For those over age 65 who are at risk for falling, exercises that improve balance are recommended.b. All adults should engage in moderate-intensity aerobic physical activity for at least 150 minutes per week, vigorous-intensity aerobic activity for 75 minutes per week, or an equivalent combination of the two.c. To maintain lean tissue and basal metabolic rate, strength training should be performed 5 to 7 times per week.d. Stretching each major muscle group should accompany aerobic or strength training at least 2 days per week.
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Response: B. Shrubland
The thornscrub ecosystem exists between the Sonoran and Chihuahuan Deserts. It characterizes a typical shrubland comprising smaller trees like velvet mesquite and shrubs such as Catlaw acacia and cactus commonly found in the Sonoran Desert. The thornscrub shrubland showcases distinct wet and dry seasons, allowing for the growth of both annual and perennial herbs. Consequently, the vegetation is influenced by alternating wet and dry periods.
