<u>The correct answer is D. 350,000 miles.</u>
<u>Description: According to US Forest Service statistics, there are five components of the extensive and diverse Forest Services roads system:</u>
- <em><u> Approximately 22 percent of all Forest Service roads </u></em>serve passenger car use.
- <em><u>Over 55 percent of all Forest Service roads</u></em> are maintained for high-clearance vehicle use.
- <em><u>Around 23 percent of all Forest Service roads are closed to highway use by the public</u></em>. Closed roads may be used for recreation uses, and for forest administration and protection.
- <em><u>Right now, Forest Service has identified at least 60,000 miles of unclassified roads </u></em>including temporary roads and roads that were never planned, built, or maintained to safety, service, and environmental standards. Probably there are substantially more miles of unclassified roads.
- <em><u>More than 7,000 bridges on Forest Service roads exist;</u></em> 5,200 are on the roads serving passenger car use.
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A patient with hyperparathyroidism, a disease where too much pth is produced, would be expected to have a decrease in bone mass and increased calcium levels in the blood.
Explanation:
This results from increased pth levels that cause an excess of parathyroid hormone to be produced (PTH).
PTH throws off the body's normal mineral balance, which can cause lower bone density and more calcium being absorbed from the digestive tract.
<h3>What is hyperparathyroidism and what are its symptoms?</h3>
- One or more of your parathyroid glands may become overactive and secrete an excessive amount of parathyroid hormone if you have hyperparathyroidism (PTH).
- This results in hypercalcemia, a condition where your blood calcium levels increase.
- Chronic fatigue, bodily aches, trouble sleeping, bone pain, memory loss, lack of concentration, depression, and headaches are among the most typical hyperparathyroidism symptoms.
- In addition, kidney failure, hypertension, osteoporosis, kidney stones, and cardiac arrhythmias are all frequently brought on by parathyroid illness.
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