Answer:
The Summer Solstice
Explanation:
12 hours each half of the day, as equinox means equal :)
Genetic screening can curb a lot of genetic defects in a population.
<h3><u>Explanation:</u></h3>
A genetic defect in an individual starts from the time the person is in mother’s womb. So, these diseases can be curbed if the person goes through a genetic screening during this time. Any genetic defected womb can be abhorred and thus how we can decrease the number of this disease.
A person with Down’s syndrome doesn’t survive for long, or doesn’t lead a healthy life. So aborting these child isn’t actually bad. Thus we can delete the chances of these babies by means of genetic screening by means of amniocentesis.
MRNA it is the messenger, for it "feeds" information
Ecological balanced refers to the condition of dynamic equilibrium in a community of organisms in which the species, the diversity of ecosystem and the genetic pool remain relatively constant as a result of gradual changes that are brought about by natural selection. It is very important to ensure that the natural balance in an ecosystem is maintained. Typically, an ecosystem has to move through series of successional changes before it can reach the state of equilibrium. FOR AN ECOSYSTEM TO BE BALANCED, IT WILL TAKE BETWEEN THIRTY TO ONE HUNDRED YEARS depending on the type of ecosystem involved.
Primary production within the open ocean is mainly through diatoms which are single-celled photosynthesising organisms. Although the concentration of productivity in the open ocean is relatively low, the vast area of the ocean means that this form of productivity contributes greatly to overall primary production on Earth. There are also regions of relatively high production from diatoms in certain parts of the ocean. This is because the productivity of diatoms is limited by a lack of certain essential nutrients in the ocean, such as iron and silica, which tend to sink to greater depths in the ocean than the surface layers that the diatoms inhabit. In these regions, upwelling occurs, bringing nutrients from the deep ocean to the surface, and resulting in diatom blooms. This occurs typically on the west coasts of continents, because upwelling occurs here due to something called the Bernoulli Effect, which relates the the way the Earth spins. This is why very productive fishery areas are usually found on the west coasts of continents, at least in the Southern Hemisphere, and why the seawater is cold in these regions.
