Answer:
Total time split from a common ancestor = 30 million
Explanation:
Given:
Number of nucleotide = 6
Number of organism = 2
Rate one nucleotide = 10 million year
Computation:
Total time split from a common ancestor = [Rate one nucleotide / Number of organism]Number of nucleotide
Total time split from a common ancestor = [10 million / 2] 6
Total time split from a common ancestor = [5 million] 6
Total time split from a common ancestor = 30 million
Emissions are greatly decreased by raising cows more quickly. Because they generate more beef per animal and therefore less overall emissions, feedlot cows are often bigger than pasture-raised cows.
Methane emissions from greenhouse gases are most prevalent in beef. For every 3.5oz of protein consumed globally, 110lb (50kg) of greenhouse gases are released. Lamb has the second-highest environmental impact, yet its emissions are still 50% lower than those of beef. Around the world, one of the biggest causes of soil erosion is livestock raising. The significant loss of topsoil and organic matter that might result from converting forests into pasture, overgrazing, or exploiting marginal lands for feed production may require decades or centuries to replenish. both through changes in land usage and the agricultural production method. Scientists are investigating the sources of methane because of rising atmospheric amounts of the gas. 250–500 L of methane per day can be produced by ruminant animals. Methane emissions from ruminant livestock can be decreased by adding supplements or additives to feed. Methane is a gas that livestock normally create as a byproduct of digestion. Some feed additives have the ability to prevent certain rumen microbes from producing methane, hence lowering methane emissions. The annual methane gas production from a single cow ranges from 154 to 264 pounds.
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Answer:
the international astronomical union (IAU) downgraded the status of pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet essentially pluto meets all the criteria except one it has not cleared its neighboring region of other objects
The oxidation of one molecule of glucose under aerobic conditions will
yield/give rise to about 32 mol of ATP, while oxidation of one molecule of
glucose under anaerobic conditions, will yield only 2 mol of ATP.
Answer:
The evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect.
Explanation:
Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time and eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster -bottleneck effect- or because of a population split -founder effect-. In <u>founder effect</u>, a new population originates when a few individuals who are coming from a bigger population carrying its genes, settle down in a new area and reproduce. This small population might or might not be genetically representative of the original one. Some rare alleles might be exceeded or might be completely lost. Consequently, when the small population increases in size, it will have a genetically different composition from the original one. In these situations, <u>genetic variability is reduced</u> and there exists the possibility of developing a peculiar allelic composition. If the number of individuals that originated the new population is low, the founder effect will be very extreme, because the effects of the genetic drift are inversely proportional to the original number of individuals.
<em>In the exposed situation, the evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect. The fact that both islands are similar in their frequencies might be due to little genetic variation on island 1, or because dispersion to island 2 is a recent event on time. </em>
