The process that occurs in a cell when there is not enough oxygen
is called fermentation. Fermentation occurs through the process of Anaerobic Respiration,
where instead of using oxygen, organic and inorganic molecules are used as
final electron acceptors. The by-product of this process is usually alcohol,
ethanol, or acetic acids.
<span>
Fermentation is commonly used in lactic acid (in muscles) and alcohol (beers,
whiskey) fermentation where the by-product is ethanol. Yeasts are a common
organism that uses this process, where it convert sugars into alcohols or
acetic acids.</span>
Answer:
Recent studies have shown that dark skin colour was developed in the past for protection against cancer. Scientists claim that in the past natural selection favoured humans having dark colour as compared to humans having a fair colour. This is because humans having a darker colour produced more melanin which protected them from ultraviolet radiation. As a result, this skin colour protected more against skin cancer. Hence, Having a darker skin colour protected in survival and reproduction to people thousands of years ago.
Rivers usually empty into oceans. Any pollution deposited or pick-up by the river, will eventually end up in the ocean.
The correct answer for the question that is being presented above is this one: "<span>The law of </span><span>segregation </span><span>is the Mendel’s laws or principles explain that traits are passed from parents to offspring individually instead of as pairs, groups or sets. D</span><span>uring the formation of gametes, two copies of each heredity factors separate out so that the new offspring can get one factor of both the parents.</span>
Population decrease and extinction
