Gradualism, a theory in both geology and biology, suggests that significant changes occur through slow, continuous processes over long periods of time. This contrasts with the concept of punctuated equilibrium, which describes long periods of stasis interrupted by rapid changes. Both gradualism and punctuated equilibrium are observed in the evolutionary process.
The theory that the student is referring to seems to be the concept of gradualism in the context of evolution and geology. Gradualism is the idea that substantial changes in species or the earth's geology can occur through slow, sustained processes over long periods of time. This runs in contrast to the concept of punctuated equilibrium, which describes long periods of stasis or no change, interrupted by rapid bursts brought on by drastic environmental changes.
Some ideas of gradualism were initially influenced by 18th-century geologists like James Hutton and later Charles Lyell, who proposed that geological change occurred slowly due to continuous small changes. These thoughts dramatically influenced Charles Darwin's evolutionary theories. Darwin adopted a gradualist approach in his understanding of evolution, proposing that given enough time, slow and subtle processes could produce significant biological changes within species.
However, both gradualism and punctuated equilibrium models are seen in practice, with evidence from the fossil record showing both long periods of slight, gradual change and shorter periods of rapid, significant change. In conclusion, evolution is not a linear process but a branching one and involves elements of both gradualism and punctuated equilibrium.
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B. the parent animal divides into two new animals
C. the offspring develops as an outgrowth of the parents body wall.
D.an egg develops without being fertilized by a sperm
Parthenogenesis is a method of reproduction in which an egg develops without being fertilized by a sperm. The correct option is D.
An unfertilizedegg produces a child without the help of male gametes (sperm) in this type of asexualreproduction.
Since they only receive geneticmaterial from the female parent, parthenogenesis produces kids that are often genetically identical to or very similar to the parents.
Numerous creatures, including certain invertebrates, reptiles, and even some fish and birds, exhibit this mode of reproduction.
Without mating or geneticrecombination, offsprings can be produced due to parthenogenesis.
Thus, the correct option is D.
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neutron
cell
nucleus
B. identical to an entire single strand of DNA
C. double stranded and inside the nucleus
D. complamentary to part of one strand of DNA
During eukaryotic transcription, an RNA molecule is formed that is complementary to part of one strand of DNA.
During eukaryotic transcription, an RNA molecule is formed that is complementary to part of one strand of DNA. This RNA molecule, known as messenger RNA (mRNA), is transcribed from a specific gene and carries the genetic information from the DNA to the ribosome for protein synthesis. It is single-stranded and not double-stranded like DNA.
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Population growth impacts areas in a variety of ways is C. Population size determines water demand.
Population size determines water demand. Water is needed for household use, sanitaion, farming, and industrail use,so when the population increases, water demand increase.
Thus, option "C" is correct.
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Answer:C. Population size determines water demand
Explanation:Population size determines water demand. Water is needed for household use, sanitaion,farming, and industrail use,so when the population increases,water demand increase.
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For study island
The food for dicot embryos is stored in the endosperm while food for monocot embryos is stored in the cotyledons.