<span>Contaminated water supplies have been responsible for major outbreaks of
severe gastrointestinal illnesses such as gastroenteritis and infections caused
by the protozoan parasites </span>Cryptosporidium<span> <span>and </span></span>Giardia<span>. Gastrointestinal illnesses can be particularly severe for
the very young, the elderly and people with weakened immune systems.Private
water supplies can also be contaminated by various chemicals or metals which,
at elevated levels, can be harmful to your health.</span>
1.A
2.D
3.D
4.C
5.i thank it is D
hope these helps you
<u>Answer:</u>
The main purpose of the national research projects, the National Health and Nutrition Examination Surveys (NHANES) and the Continuing Survey of Food Intakes by Individuals (CSFII) is to "determine what the nutrient and dietary intakes of the population in our country are".
<u>Explanation:</u>
The National Health and Nutrition Examination Surveys (NHANES) is organized by National Center for Health Statistics (NCHS), in order to assess the U.S. population's total nutritional status through dietary interviews, health and medical histories, laboratory measurements and physical examinations.
Results or outcome from this survey is utilized to find out the widespread presence of main illnesses and disease vulnerability or risk. The acquired data will be used to assess nutritional flow and associate it with health promotion and the prevention of diseases.
Answer:
they have big effects; it usually affects cells, tissues, and systems other than the target cells
Explanation:
Both presbycusis and tinnitus deal with hearing. Presbycusis is a loss of hearing, which usually occurs as an individual gets older. Tinnitus is a symptom of presbycusis in which an individual may hear ringing, roaring or hissing sounds in one or both ears.
