Answer:
Answer choice:Petroleum
Explanation:
Petroleum (crude oil and natural gas plant liquids): 28% Coal: 17.8%
<span>The physical characteristics of minerals include traits which are used to identify and describe mineral species. These traits include color, streak, luster, density, hardness, cleavage, fracture, tenacity, and crystal habit.</span>
Answer: convergent evolution
Explanation:
The similar shapes of fast swimming marine predators are an example of convergent evolution.
Convergent evolution shows how different species possess identical structures even though they evolve separately. Convergent evolution typically takes place with the organisms that are not really related.
An example of convergent evolution is the similarity that can be noticed in the wings or the flights of bats, birds, insects, etc
Answer: They evolve through genetic drift.
Explanation: <u>Junk DNA refers to noncoding sections of a genome</u>. It consists of repeated segments scattered randomly throughout the genome generated through transposition or movement of sections of DNA to different positions in the genome.
Genetic drift is the change in the frequency of an allele in a population due to random sampling of organisms. This process is caused by spontaneous mutations and may cause the alleles to disappear completely and thereby reduce genetic variation. <u>Many of these genetic alterations are in regions of "junk DNA"</u>
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The egg cell must first be enucleated through the process of removing the nucleus from the surrogate mother’s egg. An adult cell nucleus from the desired mother is then inserted into the enucleated egg. This combination of adult cell nucleus inside the enucleated egg must now be stimulated with an electric shock. This will cause the start of cell division by mitosis to eventually form an embryo in the uterus of the surrogate mother whom the initial enucleated egg belonged to.
