Which of the following statements about dna viruses are true?

select all that apply.

a. dna viruses are considered living, unlike rna viruses.
b. types i and ii of the baltimore system are used for classifying dna viruses only.
c. dna viruses have a very high mutation rate.
d. double-stranded dna viruses are more common than single-stranded dna viruses

Answer;

B. Types I and II of the Baltimore system are used for classifying DNA viruses only.

D. Double-stranded DNA viruses are more common than single-stranded DNA viruses

Explanation;The Baltimore classification is a virus classification system that groups viruses into families, depending on their type of genome, that is DNA, RNA, single-stranded (ss), double-stranded (ds), etc..) and their method of replication.Type I is composed of double-stranded DNA viruses and Type II has single-stranded DNA viruses. RNA viruses have much higher mutation rates compared to the DNA viruses, they have approximately one mutation per virus genome copy.

When you cut down a tree, its roots remain in the ground. They absorbed carbon too, and for most trees that is a considerable fraction of their total mass. The decay of roots over time leave much of the carbon as part of the soil structure, so that remains fixed for long times.

The leaves, needles, seeds, cones, twigs and other parts will have become part of the topsoil too. Over the life of a tree, much more carbon is stabilized than just what is in the cut tree.

The wood from trees that have been cut down may get used in buildings and other products that can last for centuries.

Explanation: