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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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Answer:

Option B

Explanation:

When ever a scientific research or experiment is conducted , it is made sure that the results obtained are consistent through multiple trials. Here , only two trials are done i.e one on coast of California and the other on the Pacific Ocean.

Since the number of samples taken for this study are not as per the standard sample guidelines and hence the result obtained can not be considered as a acceptable.

Thus, option B is correct

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dolphi86 [110]

Answer:

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This organ is often described to be a sac containing gas. It helps these set of fish adjust its buoyancy and its position in the water by regulating the concentration of gas present in it.

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The swim bladder is homologous to the lungs of tetrapods. Since they are formed in the same vein. Few fishes that have an open swim bladder employs it as a breathing organ.

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Answer:

d) sedimentary, metamorphic and igneous

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