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Temka [501]
3 years ago
12

Earthquakes occur most frequently near ________ margins.

Biology
1 answer:
grin007 [14]3 years ago
3 0
Earthquakes occur most frequently near active margins.
The three major zones of the ocean floor are;
continental margin,<span> </span>deep-ocean basins<span>, and </span>mid-ocean ridges
Continental margins has two types of margins, active and passive margins, these both margins are located near coastlines.
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The theory of continental drift says:
Eddi Din [679]

Explanation:

the last option is the correct answer

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3 years ago
Normally, this region is imprinted in the sperm, but not the egg. This means that the DNA on the ____________ copy of the chromo
Nostrana [21]

Answer: The DNA on the paternal copy of the chromosome will be methylated at the imprinting center, while the DNA on the maternal copy of the chromosome will not be methylated in this region.

Explanation:

Chromosomes are DNA structures associated with proteins such as histones. They are found in the nucleus of cells and contain genetic information for the development and functioning of an organism. Human beings are diploid, meaning that they possess two copies of each of the 23 chromosomes (a total of 46).

Gametes, which are sex cells such as the sperm (produced by the male) and the egg (produced by the female) that are haploid. This means that they possess only one chromosome of each pair. During fertilization, a male gamete fuses with a female gamete to generate a zygote, which will give rise to a new human being. <u>This new individual will possess half of the genetic material from its father and half from its mother. Thus having a total of 46 chromosomes, 23 from each parent</u>.

Genetic imprinting modulates gene expression by chemical modification of DNA and/or modification of chromatin structure. Often, genetic imprinting causes a gene to be expressed only on the chromosome inherited from one of the parents. One example of imprinting is DNA methylation, which is a process by which methyl groups are added to DNA. <u>Methylation modifies DNA function when found in the promoter gene, repressing gene transcription. This means that a methylated gene will not be expressed</u>, that is, it will not produce a protein encoded by that gene. So, if a region of DNA is imprinted in the sperm cell, the paternal chromosome inherited from this sperm will be methylated in the genes of the offspring. And the offspring will only express the maternal copy inherited, which will not be methylated.

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3 years ago
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Ierofanga [76]

Answer:

O How can wind be used to generate electricity?

4 0
3 years ago
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3. How does the salinity in water change as you move from inland areas out towards the ocean? Be sure to include the phrase "bra
Len [333]

Answer:

Explanation below.

Explanation:

3. The salinity of water increases as the water moves from the inland area to the ocean. This is because the ocean has high salinity.

Salinity is the amount or concentration of salt in the water.

WAYS BY WHICH ESTUARIES PROTECT THE INLAND AREAS

1. The plant in estuaries prevent shoreline erosion.

2. Protect the inland areas from flooding.

3. Protect the inland areas from storm surges from hurricane.

IMPORTANCE OF ESTUARIES TO INLAND PEOPLE AND WILDLIFE.

1. They provide nesting and feeding habits for many aquatic plants and animals.

2. Provide goals and services that are economically and ecologically indispensable.

3. Prevent shoreline erosion

4. Protect the inland areas from flooding.

IMPACTS OF DREDGING ON FISH LIVING ESTUARIES.

Dredging have negative impacts on the organisms in estuaries. These are

1. Habitat degradation

2. Remobilization of contaminants

3. Increase rate of sedimentation.

4. Increased the concentration of suspended matter.

8 0
3 years ago
Which statement defines externality?
GenaCL600 [577]
It refers to the cost or benefit of an activity by an economic agent for which it does not pay a price. Fr ex: factory produces goods , it releases harmful smokes n polluts our enviroment. In this case externality implies the negetive effect. Hope it helped u!!
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