air pollution and diseases. Flashcards

1
Q

air pollution

A

the release of chemicals and particulates (in gaseous or dust form) into the atmosphere.

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2
Q

particulate matter (pm)

A

: a mixture of solid particles and liquid droplets found in the air. It is divided into different categories based on size.

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3
Q

what are the catergories in PM

A
  1. coarse particle (PM 10)
  2. Fine particles (PM 2.5)
  3. Ultrafine particles (PM 0.1)
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4
Q

less than 2.5 micrometers such as vehicle exhaust, wildfires, power plant emissions are examples of

A

fine particles pm 2.5

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5
Q

between 10 and 2.5 micrometers

such as : mold spores, pollen, dust, soot/fly ash, plant and insect parts are examples of

A

coarse particles pm10

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6
Q

what is absolutely necesary for life?

A

air

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7
Q

how long can a man lbe deprived with out air?

A

3 mins

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8
Q

what are the main functions of air?

A
  1. interchange of gases in respiration

2. regulation of body temperature.

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9
Q

air maily consist of

A

78% nitrogen

21% oxygen

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10
Q

other gases present in small quantities in air are?

A

are argon, carbon dioxide, watery vapour or aqueous vapour, methane, neon and other gases.

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11
Q

The combined effects from ambient (outdoor) air pollution and indoor air pollution cause approximately_______ premature deaths every year, largely as a result of increased mortality from stroke, IHD, COPD, lung cancer and acute respiratory infections.

A

7 million

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12
Q

air pollution can occur in both

A

out door and indoor environments

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13
Q

what are common sources of air pollution?

A

Household cooking, industries, motor vehicles, incinerators and forest fires are common sources of air pollution.

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14
Q

Air pollution originates from numerous sources of emission, both

A

natural and man-made

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15
Q

air pollution becomme more dominant since the beginning of ______.

A

industrialization.

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16
Q

what is the greatest contributor to air pollution,

A

The process of combustion

17
Q

Over 90% of people live in places where the air is unhealthy to breathe, resulting in 4.2 million deaths globally each year (2016 data). Of all deaths from ambient air pollution, 38% were due to _______, _______were due to stroke and 43% were due to_________

A
90%
4.2 million
ambient
38% IHD (heart disease)
20% stroke
43% COPD