One activity that would have a big impact would be of cutting down tress, or the burning of the whole forest. The forest ecosystem consists of many animals, they benefit each other because they prevent one of them from overpopulating. If one of the animals of the ecosystem is gone, the whole biodiversity is affected.
Answer: D) retroviruses
Explanation:
Retroviruses are a type of virus that converts its genetic material into DNA using a special enzyme, called reverse transcriptase. The DNA is then able to integrate into the DNA of the host cell. Once integrated, the virus can make additional viral particles using the components of the host cell.
Retroviruses which cause cancer at low incidence do not contain host information inserted. Rather, they tend to cause cancer via the expression mutation of potentially oncogenic host genes. Retroviruses incorporate proviral DNA into their host's chromosomal DNA during their natural life-cycle. Provirus DNA promoter affect regulatory gene expression over.
Hence, the correct option is D.
You can use a punnet square to find this out:
t t
T Tt Tt Answer: C
t tt tt
Where T = Tongue rolling (dominant) and t = Incapable (recessive)
Answer:
properties of carbon responsible for huge number of organic compounds
tetravalency it has a valency of four so one carbon atom can bond with four other atoms or form four bond
