Which two factors does toxicity depend on?

The two factors that toxicity depends on are (1) what the substance is, and (2) how much of the substance is needed to cause harm. T/F, People respond /differently/ to the same environmental hazards. True. T/F, People with compromised are often /less/ sensitive to biological and chemical hazards than healthy people.

The two factors that toxicity depends on are (1) what the substance is, and (2) how much of the substance is needed to cause harm. T/F, People respond /differently/ to the same environmental hazards. True. T/F, People with compromised are often /less/ sensitive to biological and chemical hazards than healthy people.

Beside above, why are emerging diseases a cause for concern quizlet? Emerging diseases are dangerous because vaccines have not been developed and because humans have little to no resistance to the pathogens. Explain how climate change may encourage an increase in the spread of disease. As global temperatures rise, tropical diseases could expand into areas that used to be cooler.

In respect to this, how are risk assessments of environmental hazards useful to policymakers?

Risk assessment includes figuring out what a hazard is, how often humans are exposed to it, and how sensitive individuals are to the hazard. Risk assessments help scientists decide if a substance is harm- ful, and they help policymakers decide on policies to protect people and the environment.

Are chemical hazards and pollutants the same thing why or why not explain?

Define “chemical hazard. A chemical hazard is a toxic substance that may harm human health. Chemical hazards are not considered pollutants if they do not harm the environment.

Which two elements are most often found in fertilizers?

Nitrogen, phosphorus and potassium, or NPK, are the “Big 3” primary nutrients in commercial fertilizers. Each of these fundamental nutrients plays a key role in plant nutrition. Nitrogen is considered to be the most important nutrient, and plants absorb more nitrogen than any other element.

How harmful a substance is?

The toxicity of a substance is its ability to cause harmful effects. These effects can strike a single cell, a group of cells, an organ system, or the entire body. A toxic effect may be visible damage, or a decrease in performance or function measurable only by a test. All chemicals can cause harm.

Why are emerging diseases a cause for concern?

The reasons for this situation are easily identified in some cases as associated with treatment modalities (permissive use of antibiotics), the industrial use of antibiotics, demographic changes, societal behavior patterns, changes in ecology, global warming, the inability to deliver minimal health care and the neglect

What are three ways pathogens can spread?

Pathogens can be transmitted a few ways depending on the type. They can be spread through skin contact, bodily fluids, airborne particles, contact with feces, and touching a surface touched by an infected person.

What is physical hazard and its examples?

A physical hazard is defined as “A factor within the environment that can harm the body without necessarily touching it. Vibration and noise are examples of physical hazards”. Physical hazards include but aren’t limited to electricity, radiation, pressure, noise, heights and vibration amongst many others.

Who is most sensitive to environmental hazards?

Some people cannot tolerate chemical exposure as well as others. We call these groups of people sensitive populations. They can include pregnant and nursing women, children, and older adults. 1 This booklet discusses what chemical exposure means for these populations.

What is the process of risk assessment used to determine?

Risk assessment is a term used to describe the overall process or method where you: Identify hazards and risk factors that have the potential to cause harm (hazard identification). Determine appropriate ways to eliminate the hazard, or control the risk when the hazard cannot be eliminated (risk control).

Is pollution a chemical hazard?

Chemical pollution definition. The definition of chemical pollution: When chemicals are released into our environment and disrupts the balance of our ecosystems, threatening our health, polluting the air we breathe and contaminating our food. There are many sources of chemical pollution.

What are social hazards?

Social hazards, also called complex emergencies, seriously limit a population’s access to health services, water, food, and transportation, all of which are determinants of health. They also often lead to a lack of safety and tend to come hand in hand with natural disasters such as floods.

What are some indoor chemical hazards?

ACOEM’s checklist of list of Ten Environmental Hazards You Can Live Without includes: Tobacco smoke. Radon. Asbestos. Lead. Combustion gases. Tap water. Household chemicals. Pesticides.

Which of the following is considered a biological hazard?

Biological Hazards. Sources of biological hazards may include bacteria, viruses, insects, plants, birds, animals, and humans. These sources can cause a variety of health effects ranging from skin irritation and allergies to infections (e.g., tuberculosis, AIDS), cancer and so on.

Do all social hazards result from an individual’s lifestyle choice?

Most social hazards result from an individuals lifestyle choice but not in all cases, say someone lived near a power plant and their constantly exposed to that.

Which of the following is a physical hazard that could be found in food?

Physical hazards usually result from accidental contamination and /or poor food handling practices. Examples include, slivers of glass, human hair, nails, false nails, nail polish, pieces of jewelry, metal fragments from worn or chipped utensils and containers, dirt, stones, frilled toothpicks.

Do you think that modern medicine will ever eliminate biological hazards from Earth Why or why not?

Sample answer: It is unlikely that modern medicine will eliminate all biological hazards from Earth because pathogens are always evolving and can evolve resistance to our defenses.