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Paha777 [63]
3 years ago
6

What does alternative energy mean ?

Biology
1 answer:
Kitty [74]3 years ago
8 0

energy generated in ways that do not deplete natural resources or harm the environment, especially by avoiding the use of fossil fuels and nuclear power.

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Explain how chemicals present in cigarette smoke are able to enter the body and reach the brain
kobusy [5.1K]

When you smoke a cigarette, the components; e.g. nicotine and carbon monoxide enter the lungs and are absorbed into the bloodstream. They are carried by the Red Blood Cells to the blood-brain barrier, here, nicotine binds to nicotinic acetylcholine receptors (nAChRs), resulting to a cascade that results to release of dopamine (good-feeling neurotransmitter).






4 0
3 years ago
In a relatively small iguana population the allelic frequency is tracked for three generations. Webbing is a recessive allele; n
kakasveta [241]

Answer:

This is an example of founder effect.

Explanation:

Founder effect may be illustrated as the loss of genetic variation in a novel small population originated from the original population. The concept was initially presented by Ernst Mayr. It can be seen that genetic diversity has got reduced in the population of iguana due to the result of the flood that has washed all the iguana without webbed feet into the sea.  

The new population has got inclined from the small iguana population. Thus, the iguana population is regarded as an illustration of the founder effect.  

5 0
3 years ago
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Why are small quantities of chlorofluorocarbons so harmful to the ozone layer?
ikadub [295]

Answer:

The chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production. ... Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone.

8 0
3 years ago
How are sediments formed?
Vladimir [108]

Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension.

Explanation:

4 0
3 years ago
What is the doctrine of Specific Nerve Energies?
Angelina_Jolie [31]

Answer:

The Doctrine of Specific Nerve Energies has been and continues to be enormously influential in the physiology, psychology, and philosophy of perception. In simple terms, the Doctrine states that we directly perceive in the first instance the activity of our nerves, rather than properties in the external world.

5 0
2 years ago
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