Which disorder could develop in the human body when the immune system attacks a usually harmless environmental substance?

Any product, substance, or organism included by its nature or by the regulation in any of the classes listed in the schedule (UN

olga55 [171]

Their are 9 class of hazardous material:

1 CLASS 1 : Explosive

2 CLASS 2 : Gases compressed, liquefied, dissolved under pressure or deeply refrigerated.

3 CLASS 3 : inflammable liquids.

4 CLASS 4 : Inflammable solids, substances liable to spontaneous combustion substances which on contact with water emit inflammable gases.

5 CLASS 5 : Oxidising substances, organic peroxides.

6 CLASS 6 : Poisonous (toxic) and Infectious substances.

7 CLASS 7 : Radioactive substance.

8 CLASS 8 : Corrosives.

9 CLASS 9 : Miscellaneous dangerous substance.

Hazardous :A hazardous material is any item or agent (biological, chemical, radiological, and/or physical) that has the ability to cause harm to humans, animals, or the environment. This could be as a result of the material by itself or interaction with other materials.

To learn more about Hazardous material refer: brainly.com/question/27318175

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6 0

2 years ago

To trace our maternal lineage, we observe mutations that have accumulated in our mitochondrial dna (mtdna). in the dna isolation

Sergio [31]

In the coding region, natural selection tends to eliminate all of the mutations because of the high importance these regions have. The coding region contains genes that synthesize proteins and the changes in the DNA sequence can have devastating effects on the cell. Therefore, there are very few differences in the sequences of coding regions that can help us trace the lineage.
On the other hand, in the non-coding regions, the mutations often accumulate because they have little effect on the cell and the adaptive value of the organism. This enables us to trace up the lineage by comparing the sequences and seeing the differences in the sequences.

4 0

3 years ago

A semisolid deep is inoculated with a bacterial culture. after incubation, the area of growth is observed to spread into the aga

sergij07 [2.7K]

Hello there
The answer is The bacteria are motile.
Hope this helps
Best Regards Queen Z

6 0

3 years ago

A — is a chemical substance that organisms require to live

Veronika [31]

Answer:

A — is a chemical substance that organisms require to live

NUTRIENT

Explanation:

A nutrient is a chemical substance required by living organisms to live. These nutrients can either be organic or inorganic, but basically either organic or inorganic are required for existence. this esential nutients are

lipids
protein
carbohydrates
vitamins
Minerals
water

8 0

4 years ago

Read 2 more answers

Choose a pair that correctly associates the mechanism for osmoregulation or nitrogen removal with the appropriate animal. choose

Anika [276]

I think the answer is the last one; Flame bulb; flat worm.
A flame bulb or a flame cell is a specialized excretory cell found in the simplest fresh water invertebrates, including flatworms, rotifers and nemerteans; these are the simplest animals to have a dedicated excretory system. Bundles of flame cells are called Protonephridia.

3 0

4 years ago