Biology, 16.11.2019 02:31 macingram

According to darwin's theory of evolution, how do new species evolve?
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artificial selection

random chance

natural selection

unnatural selection

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Answer from: yansaturnin

According to Darwin's theory of evolution, new species evolved as a result of natural selection.

Explanation:

Darwin proposed that speciation could readily occur through the prolonged action of Natural selection.Natural selection allows the 'survival of the fittest' i.e. a more fit organism will have a better chance of survival than the less fit one.The result of Natural selection could be positive,negative or balancing.Evolutionary process in which the genetic changes confer a higher fitness to increase frequency of the organism over time in population is called positive selection.Evolutionary process in which genetic changes decreases the organism's fitness resulting in its disappearance from the population is called Negative selection.It may happen that a mutation benefits hetero-zygotes but not homo-zygotes and alleles maintain a intermediate frequency in population.This evolutionary process is called balancing selection.

Answer from: Quest

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

Answer from: Quest

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

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According to darwin's theory of evolution, how do new species evolve?
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