Identify possible sources for error for each of the parameters measured and how you can avoid or minimize the error. (i.e. Is there any bias?)
In every survey there´s always the mistakes of people in answering in an incorrect form the survey asked, so it can´t be a representative result, so in other to correct those types of mistakes or not that specific information we can have a wider range of the people asked to answer those survey´s, people of both genders, different ages, and different cultural backgrounds in order to assure a more accurate answer.
Furthermore to ensure the people that is answering that all the information is confidential and it only will be used for the purpose of these investigation and nothing more, so people can answer it in a more trustful way so they put real and relevant information, in a more honest way.
Also you can always compare your results with other investigations made by other people to see the similarities in the final results, and help yourself with trustful information like academic reports, and stadistics of newspapers, etc.

Some externalbackup information to compare results
In other cases, injured plaintiffs have also been found to have contributed to the accident because they were using a cell phone while driving.
Examples of careless driving caused by cell phone use include:
-driving with only one hand on the steering wheel
-taking eyes off the road to reach for a cell phone or dial a number
-failing to keep a proper lookout and to pay attention to surrounding dangers because of distractions caused by the cell phone (this includes being distracted by a passenger's cell phone use), and
- being distracted by a conversation on a cell phone (according to some studies, being involved in any kind of conversation -- particularly an emotionally charged one -- is enough to distract a driver and cause him or her to drive carelessly).
Insurance companies are paying close attention to the link between cell phone use and car accidents and many auto insurance websites warn of the dangers of distracted driving. If you are at fault for a car accident caused by cell phone use, or are ticketed for talking while driving,you're likely to see your insurance premium rise. The best way to avoid a higher premium is to avoid an accident -- and potential driver distractions – altogether.
This analysis also serves to highlight the potential risks associated with in-vehicle conversation of any kind, if pursued at inopportune times. Thus, development of means to address or mitigate the distraction potential of cellular telephone conversation, at least, appears worthwhile. (Please note: cellular phone use was almost non-existant in 1989, the year the data was collected. Everyone agrees that the actual numbers of distractions attributed to cell phones today would be exponentially larger.)
Inhaling fine particles can lead to a broad range of adverse health effects, including premature mortality, aggravation of cardiovascular and respiratory disease, development of chronic lung disease, exacerbation of asthma, and decreased lung function growth in children.
Sources of fine particle pollution include power plants, gasoline and diesel engines, wood combustion, high-temperature industrial processes such as smelters and steel mills, and forest fires. 
Otherclimate-related changes in stagnant air episodes, wind patterns, emissions from vegetation and the chemistry of atmospheric pollutants will likely affect particulate matter levels.  Climate change will also affect particulates through changes in wildfires, which are expected to become more frequent and intense in a warmer climate. 
Changes in Allergens
Climate change may affect allergies and respiratory health.   In addition, climate change may facilitate the spread of ragweed, an invasive plant with very allergenic pollen. Tests on ragweed show that increasing carbon dioxide concentrations and temperatures would increase the amount and timing of ragweed pollen production.
Impacts from Climate-Sensitive Diseases
Changes in climate may enhance the spread of some diseases.  Disease-causing agents, called pathogens, can be transmitted through food, water, and animals such as deer, birds, mice, and insects. Climate change could affect all of these transmitters.
Food-borne Diseases
Higher air temperatures can increase cases of salmonella and other bacteria-related food poisoning because bacteria grow more rapidly in warm environments. These diseases can cause gastrointestinal distress and, in severe cases, death. 
Flooding and heavy rainfall can cause overflows from sewage treatment plants into fresh water sources. Overflows could contaminate certain food crops with pathogen-containing feces. 

Water-borne Diseases
Heavy rainfall or flooding can increase water-borne parasites such as Cryptosporidium and Giardia that are sometimes foundin drinking water.  These parasites can cause gastrointestinal distress and in severe cases, death.
Heavy rainfall events cause storm water runoff that may contaminate water bodies used for recreation (such as lakes and beaches) with other bacteria.  The most common illness contracted from contamination at beaches is gastroenteritis, an inflammation of the stomach and the intestines that can cause symptoms such as vomiting, headaches, and fever. Other minor illnesses include ear, eye, nose, and throat infections. 

Animal-borne Diseases
The geographic range of ticks that carry Lyme disease is limited by temperature. As air temperatures rise, the range of these ticks is likely to continue to expand northward.  Typical symptoms of Lyme disease include fever, headache, fatigue, and a characteristic skin rash.
The spread of climate-sensitive diseases will depend on both climate and non-climate factors. The risks for climate-sensitive diseases can be much higher in poorer countries that have less capacity to prevent and treat illness. 
Other Health Linkages: Other linkages exist between climate change and human health. For example, changes in temperature and precipitation, as well as droughts and floods, will likely affect agricultural yields and production. In some regions of the world, these impacts may compromise food security and threaten human health through malnutrition, the spread of infectious diseases, and food poisoning. The worst of these effects are projected to occur in developing countries, among vulnerable populations.  BIBLIOGRAPHY: https://www.epa.gov/climatechange/impacts-adaptation/health.html

ACTIVITY

Mention the diseases that are caused by climate changes and specify which ones are the causes. Present the information in a table.





Principio del formulario
EL CLIMA Y SU REPERCUSIÓN EN LA SALUD HUMANA
Lea la siguiente información y hacer un resumen de su ordenador portatil sobre el tema. Luego , responda a las preguntas.
Impactos de los fenómenos meteorológicos extremos
Se prevé que la frecuencia e intensidad de eventos extremos de precipitación aumente en algunos lugares , como lo es la gravedad ( la velocidad del viento y la lluvia ) de las tormentas tropicales .Estos fenómenos meteorológicos extremos podrían causar lesiones y , en algunos casos , la muerte . Al
References
-'Get Informed.' Car Accidents Caused by Cell Phone Use. Web. 23 Feb. 2012. <https://www.nolo.com/legal-encyclopedia/car-accidents-cell-phones-30055.html>.
-'Distracted Drivers Cause Motor Vehicle Accidents.' Automobiles, Motorists, Traffic Safety and Driving Guidelines. Web. 23 Feb. 2012. <https://www.smartmotorist.com/traffic-and-safety-guideline/distracted-drivers-cause-motor-vehicle-accidents.html>.