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xxMikexx [17]
3 years ago
8

The National Ambient Air Quality Standards (NAAQS) are maximum allowable levels for _____ harmful pollutants.

Biology
2 answers:
iragen [17]3 years ago
3 0
The answer for the question 6

babunello [35]3 years ago
3 0

Answer:

The National Ambient Air Quality Standards (NAAQS) are maximum allowable levels for 6 harmful pollutants.

Explanation:

The EPA (United States Environmental Protection Agency) sets National Ambient Air Quality Standards for pollutants considered harmful to the population and the environment. EPA includes two standards, one includes public health protection, and the other damage to animals, crops, vegetation, and buildings. The standards must be revised periodically, they are classified by averaging time, level and form.

The EPA has set National Ambient Air Quality Standards for six principal pollutants:  

Carbon Monoxide: is harmful when inhaled in large amounts. CO is released when something is burned. The greatest sources of CO to outdoor air are cars, is recommended not to be exceeded more than once per year.

Lead: sources are waste incinerators, utilities, and lead-acid battery manufacturers and piston-engine aircraft operating on leaded aviation fuel.

Nitrogen Dioxide (NO2): gets in the air from the burning of fuel

Ozone: at ground level is a harmful air pollutant, is the main compound in smog.

Particulate Matter (PM) Pollution: a mixture of solid particles and liquid droplets that can be emitted directly from a source, for example fires, construction sites or industries and automobiles.

Sulfur Dioxide: they come from fossil fuel combustion  

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Tanzania [10]

Answer:

Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma.

Explanation:

Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma are the ways from which health should be affected by happening of natural disasters such as earthquake and cyclones. We are able to predict the weather with the help of satellites that monitors the movement of clouds on the earth atmosphere. Advancement of technology is the main reason which enable us to predict the weather conditions as well as the coming of cyclones in a specific region.

4 0
2 years ago
A chemical bond in which two ions will stay together because of the mutual attraction of their opposite charges is a
Hatshy [7]
This is an Ionic Bond
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Which area of the respiratory system is vascularized with the richest capillary network in the body?​
elena-14-01-66 [18.8K]

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There are from 200-500 million alveoli (mean diameter = 200 micrometers) in adult human lungs

Explanation:

The epithelial cells of the alveolar septum are markedly thinned and the capillary network immediately beneath the epithelium is the richest in the body.hope this helps you :)

3 0
3 years ago
Read 2 more answers
Small insects such as the water strider can walk on water because their weight is not enough to penetrate the water's surface.
White raven [17]

Answer:

B

Explanation:

Surface tension allows a water strider to "walk on water"

Water striders are able to walk on top of water due to a combination of several factors. Water striders use the high surface tension of water and long, hydrophobic legs to help them stay above water. ( :

3 0
3 years ago
Which of the following best compares the roles of the reproductive structures found in an angiosperm?
Lemur [1.5K]
Answer:
A) The male stamens hold the pollen, the female pistil holds the ovule, and the petals attract pollinators.

Stamens (male reproductive parts of a flower) collectively forms the male reproductive organ (androecium) in a flower whereas pistil (the female reproductive part of a flower) forms the female reproductive organ called gynoecium.

Stamen consists two parts that are anther (that produces pollens, male reproductive cells) and a stalk like structure called filament, which supports/ holds pollen producing anther.
The female pistil holds the ovule that is enclosed by ovary in flowering plants (angiosperms) and the petals in a flower attract pollinators.

Thus, option A) is the right answer.
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3 years ago
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