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Naily [24]
3 years ago
14

What is the difference between commercial and subsistence energy sources?

Biology
1 answer:
Ahat [919]3 years ago
7 0

Answer:

Commercial energy sources are those that are bought and sold, such as coal, oil, and natural gas. Subsistence energy sources are those gathered by individuals for their own immediate needs, such as wood, and animal waste List the major sources of energy in the US from highest percentage to lowest percentage.The most commercialized forms of commercial energy sources are electricity, coal, and advanced petroleum products. They are used for electricity generation on the basis of industrial, agricultural, transportation, and commercial development of the different countries of the modern world.

Subsistence: coal, oil, natural gas; sometimes wood, charcoal, animal waste) subsistence energy source. energy source gathered by individuals for their own immediate needs (typical of rural or developing areas) patterns of energy use.

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Which of the following scenarios is an example of temporal isolation?
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Answer:

B. Black-eyed Susans and daisies used to be part of the same species. A random mutation in a subset of a population caused one group to release their pollen three weeks before the other, causing interbreeding to cease.

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Temporal isolation, where temporal relates to time. So temporal isolation is the process where two populations will reproduce at different times/different seasons and therefore cause a split in species. In this case, we see the flowers release pollen at different times and caused a split into two distinct species.

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3. The mechanism in which organisms best suited for their environment survive<br> and reproduce.
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The mechanism in which organisms best suited for their environment survive

and reproduce <u>NATURAL SELECTION.</u>

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Explanation:

When individuals in a population compete for resources or live in their environment, the individuals with the slightest advantage over the others have an increased chance of reaching maturity and  reproducing to passing down their genes to the next generations.

Natural selection works on the variations of the population to ‘select’ the best alleles of genes in the population that offer an advantage in ‘survival for the fittest’. This how natural selection fits a population to its environment. The greater the variation within a population, the higher its capacity to adapt to changes in the environment.

Learn More:

For more on natural selection check out;

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