<h2>Duplicated Chromosome </h2>
Explanation:
- <em>Chromatid, D-loop is right answer</em>
- A duplicated chromosome contains two represented <em>double strand DNA particles,</em> the chromatids, that are joined at their centromere
- <em>A haploid cell stays in reality n after replication, however duplicates from c to 2c</em>
- <em> Each chromosome connected of two chromatids
</em>
- <em>The two chromatids</em>, each containing an identical DNA molecule are at first appended along their lengths by protein buildings called <em>cohesion</em>.<em>this connection is known as sister chromatid cohesion.</em>
Answer:E. Down-regulation
Explanation:Cells typically up or down regulate depending on the concentration of a hormone levels. When there is a excessive concentration of a hormone in the blood stream, the cell decreases the number of receptors reducing the interaction with that hormone, Also, when there is excessive hormone reduction, the target cells activate to increase their number of receptors.
Down regulation occurs by the the deactivating or degrading of target cells to reduce the number of receptors due to their sensitivity to a particular excess hormone.
Sometimes, heavy weight on soft soil can result in collapse of ground, resulting in asinkhole<span>. </span>Sinkholes<span> can also </span>form<span> when the land surface is changed. Areas that have a bedrock made of limestone, salt deposits or carbonate rock are most susceptible to erosion and the </span>formation<span> of such holes.</span>
<span>300 to 400. However the older a women gets the more the number goes down. We are born with all the eggs we will ever need but by the time we hit puberty the number already decreases to 300,000</span>
Answer:
B. Human activities and natural events can damage the environment.,
Explanation:
Human activities are those activities carried out by a human being. The environment is being degraded daily as a result of the activities of man as well as natural occurrences e.g earthquake, tsunami, wild fire etc.
Human activities also called anthropogenic activities that damage the environment include sewage pollution, burning of fossil fuels, oil spillage etc. Hence, according to this question, human activities and natural events can damage the environment.
