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Sever21 [200]
3 years ago
7

What are three ways that substances can be described?​

Biology
1 answer:
Margaret [11]3 years ago
7 0

Answer:

chemical name, for example, benzene;

number, for example, EC number 200-753-7, and.

chemical composition, for example, >99 % benzene and <1 % toluene. The composition is determined by chemical analysis.

Explanation:

hope thishelps!

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Pls help meeeee!!!!! It should be easy
matrenka [14]

1. condensation

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8. change of state

9. in the gas state

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11. true

12. true

13. false

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3 0
3 years ago
Read 2 more answers
Autonomic dysreflexia is characterized by a. hypotension and shock. b. hypertension and bradycardia. c. pallor and vasoconstrict
omeli [17]

Answer:

B) hypertension and bradycardia.

Explanation:

Autonomic dysreflexia is a syndrome which is characterised by the sudden rise in the blood pressure of the human. The disease is common in the people with a higher level of spinal cord injuries above the T6 level.

The condition occurs when some external stimuli like pain or irritant activate the involuntary response in the body which cause the blood pressure to rise (hypertension). This leads to the slowdown of the heartbeat (bradycardia) to restore the blood pressure but the body cannot restore the blood pressure due to the damage in the spinal cord.

Thus, Option-B is the correct answer.

8 0
3 years ago
Identify the 3D shape shown below.
iogann1982 [59]

The 3D figure is a triangular prism

6 0
3 years ago
Read 2 more answers
How the process of natural selection canexplainhow evolution occurs?
harkovskaia [24]
In natural selection, there are three main things you need to know. There must be a variance in the genepool of course, or else to selection or evolution will take place. There also must be a selective force and time. Now, lets say that there is a population of many colored moths. But lets say that the brown colored moth blends in with the environment. This means that predators (selective force in this case) will have a much harder time finding these brown moths instead of easily finding some of the other colored moths (variation). This means that the brown moths will survive at a much higher rate because the are harder to find, and over time, the gene pool will narrow down to just brown moths because the rest of the moths die out due to predators and competition. This also means that this moth species has evolved over time to just become the brown colored moths only. Hope you can understand this but feel free to ask for clarification.
8 0
3 years ago
Describe the main characteristics of chordates.<br> Please DESCRIBE! <br> thanks
egoroff_w [7]

Answer:

The characteristic features of the phylum Chordata are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a tailgut.

Hope this helps

7 0
2 years ago
Read 2 more answers
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