The correct answer is option B, that is, it presents the correct sequence of events in Earth’s history.
The geological time scale signifies towards a framework of chronological dating that relates geological strata with time. It is used by geologists, paleontologists, and other scientists of the Earth to illustrate the relations and timings of incidents that have taken place during Earth's history.
Answer:
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Explanation:
ANSWER OF 1ST QUESTION -
1) it protects the nucleic acid from digestion by enzymes, 2) contains special sites on its surface that allow the virion to attach to a host cell, and 3) provides proteins that enable the virion to penetrate the host cell membrane and, in some cases, to inject the infectious nucleic .
ANSWER OF 2ND QUESTION -
Mutations can produce viruses with a reduced pathogenicity, altered host range, or altered target cell specificity but with intact antigenicity. Such viruses can sometimes be used as vaccine strains.
There must be a change in the chemical composition of the substance and the change is highly irreversible
Answer:
Both leading and lagging strands
Explanation:
DNA replication is the enzyme of DNA replication that forms new DNA strands. However, the enzyme cannot start the process of synthesis of new DNA strands by itself but needs small primers. Primers are the small RNA sequences synthesized by RNA primase on both leading and lagging strands.
These primers are elongated by DNA polymerase by the addition of deoxyribonucleotides according to the sequence of the template strand. Since DNA replication on both lagging and leading strand is carried out by DNA polymerase, RNA primers are present on both lagging and leading strands.
.What industry contributes to wetland loss in Louisiana?
"The swamps and marshes of coastal Louisiana are among the Nation's most fragile and valuable wetlands, vital not only to recreational and agricultural interests but also the State's more than $1 billion per year seafood industry.What part of Louisiana is most in danger from land loss?
Dozens of reports show the highest rate of land loss occurred in areas with the heaviest amount of oil and gas extraction and canal dredging, Marshall says. According to some studies, the oil and gas industry is responsible for anywhere between 36 to 60 percent of the loss.
