Answer:
Population data is defined as a set of individuals who share a characteristic or set of these. A population is mainly determined by geographies, such as all people in California, or all people in the United States. Demographers (people who study human populations) categorize this as the natural population.
Explanation:
Answer: 2.0 years
Explanation:
NOTE:
17% of the U.S. population lives in rural areas, while 83% in urban areas.
During the past 40 years, there is a consistent overall increase in U.S. life expectancy from 70.8 years in 1970 to 78.7 years in 2010. However, a decade ago, a study reveals the rural-urban gap widening from 0.4 years in 1969 through 1971 to 2.0 years in 2005 through 2009.
Study showed that 70% of the overall rural-urban gap in life expectancy and 54% of the life expectancy gap between the urban rich and rural poor in 2005 to 2009 are caused by accidents, cardiovascular disease, COPD and lung cancer.
A combination of factors likely accounts for this disparity. Compared to urban areas, rural areas have higher rates of both smoking and lung cancer, plus obesity, yet reduced access to health care services. Also, rural dwellers have a very low median family income, higher poverty rate and very few have college degrees.
Answer:
What makes the sweat glands in the skin secrete more sweat when the body is hot is the brain signaling the sweat glands to secrete sweat to cool the body.
Explanation:
The sweat produced by the sweat glands is an important mechanism of body thermoregulation.
The perception of the increase in temperature is captured by specific receptors, which send the information to the central nervous system, specifically to the preoptic area, placed near the hypothalamus. Once the information is processed, the brain sends an efferent response to the effector cells, in this case, the secretory cells of the sweat glands.
The<u> body temperature decreases with sweating because evaporation means that the water in the sweat absorbs heat so that this process occurs, which lowers the body temperature</u>.