For optimal sleep, the text recommends exposure to natural sunlight for ________ hours per day
A) two
B) four
C) six
D) There is no limit; the more exposure to natural light during the day, the better one should sleep.
Answer: D
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Answer the following statement(s) true (T) or false (F)
1. Urban air pollution plays a significant role in the development of lung cancer for most people. 2. Exposure to carcinogens in the environment causes about one-third of all cancers. 3. Radiation is both a cause of and a treatment for cancer. 4. Sunlight is a very important source of radiation. 5. Pain is a common symptom of cancer in its early stages. 6. Cancer vaccines may be available for certain cancers soon. 7. Stem cells are unique, unspecified cells that can divide and produce more specialized cell types.
One function of the kidneys is to maintain normal pH in the body
Indicate whether the statement is true or false
Charlotte is an active 55-year-old woman who makes sure her exercise routine includes exercises for strength and endurance, balance, and flexibility. She can expect all of the following functional health benefits as she ages EXCEPT
A. maintain the ability to climb stairs. B. the ability to drive beyond the age of 80. C. a decreased risk of falls. D. delayed need for assisted living.
What stage of change produces visible signs that friends and family notice??
A) ?contemplation B) ?preparation C) ?action D) ?postcontemplation E) ?maintenance