Answer:
B
Explanation:
We have day and night because the Earth rotates. It spins on its axis.
Answer:
Carbon Dioxide Emissions: Human Sources
<h2>Human activities such as the burning of oil, coal and gas, as well as deforestation are the primary cause of the increased carbon dioxide concentrations in the atmosphere.</h2>
Answer:
<em>Astrocytes</em>
Explanation:
In the central nervous system, astrocytes, also collectively known as astroglia, are distinctive star-shaped glial cells.
It is not well known the ratio of astrocytes in the brain.
Research has found that the astrocyte proportion varies by area depending on the counting technique used and varies from 20% to 40% among all glia.
These fulfill many roles, namely <em>biochemical reinforcement of tumor cells that build the blood-brain barrier, nutritional supply to the nervous tissue, extracellular ion balance maintenance, as well as a function in the brain and spinal cord repair and scarring cycle after severe injuries.</em>
Answer: The correct answer for the fill in the blank is A) Transcription.
Transcription is a process in which genetic information ( present in the form of nucleotide sequence) from DNA (deoxyribonucleic acid) is copied into a strand of mRNA (messenger RNA) with the help of enzyme RNA polymerase.
It is the initial process of gene expression.
The mRNA thus formed is further translated to form desirable protein.
Thus, during the process of transcription, the genetic message from DNA is transformed to mRNA.
