Answer:
Producers give off AND take in carbon dioxide
Explanation:
They give off carbon dioxide from respiration so they return carbon dioxide to the atmosphere. They also use carbon dioxide to synthesize their food.
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Answer:
Smaller populations have a greater chance of having one allele expressed disproportionately.
Explanation:
Genetic drift corresponds to a drastic casual alteration of the natural order, reaching the genotypic concentration of one or several species, not preliminarily involving natural selection factors, but caused by sudden events. Such phenomenon is characterized by the occurrence of ecological catastrophes, for example: earthquakes, tsunamis, tornadoes, floods, burnings, avalanches and other processes, affecting a large population contingent. Thus limiting the genetic content of a particular group, restricted to the prevailing individuals.
In this situation, with low variability, differentiated individuals will experience a more significant selection pressure in relation to the ascending lineage, which minimized the achievements of selection due to the high number of living individuals. In this scenario, smaller populations will have a greater chance of having a disproportionately expressed allele as the number of members is reduced. We can also see this effect if by using a coin we imagine that heads and tails are two alleles in a population and each coin toss represents one member of that population.
Answer:
The assimilation of the primary consumer is 5000 kcal/m2/yr, option C.
Explanation:
From the information in the question, the Net Production Efficiency, NPE can be calculated using 100Cp/AS.
Where CP is the consumer productivity and AS is the Assimilation.
Therefore, 20 = 100 x 1000/AS
AS = 100,000/20 = 5000 kcal/m2/yr. Option C.
