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irina1246 [14]
3 years ago
9

You have arrived on the scene of an incident involving an explosion. People in the immediate vicinity are all experiencing runny

noses and difficulty breathing. Some are having convulsions. You suspect a terrorist incident involving a:
A. biological agent
B. blister agent
C. nerve agent
D. blood agent
Biology
1 answer:
Sergio [31]3 years ago
7 0

Answer:

Nerve agent

Explanation:

A nerve agent is a chemical in which on exposure to humans affects the functioning of the nervous system. These chemicals are known to disrupt the process by which messages are transferred to the organs from the nerve. This disruption occurs by blocking the activity of acetylcholinesterase, which is responsible for the catabolism of a neurotransmitter, acetylcholine.  

On exposure to a nerve agent, the muscles of the body become paralyzed and early symptoms is production of excess mucous such as in runny nose, pupil constriction and also difficulty in breathing.

These agents are sometimes used in chemical warfare. Examples include sarin, tabun etc.

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While there is no authoritative decision on which year is used, the International Astronomical Union (IAU) recommends the Julian year.

A light-year is equal to 9,460,730,472,580.8 km (about 9.461 Pm; 5,878,625,373,183.61 statute miles; about 63,240 astronomical units or about 0.3066 parsecs.

The exact length of the light-year depends on the length of the reference year used in the calculation, and there is no wide consensus on the reference to be used.

The figures above are based on a reference year of exactly 365.25 days (each of exactly 86,400 SI seconds).

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The most distant space probe, Voyager 1, was 13 light hours (only 1.5 × 10-3 light years) away from Earth in September 2004.

It took Voyager 27 years to cover that distance.

The nearest known star (other than the Sun), Proxima Centauri is 4.22 light years away.

The center of our galaxy, the Milky Way, is about 26,000 light years away.


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