<em>Answer:</em>
C. Many, many years of deposition
<em>Explanation:</em>
The layers of the rocks in one region of the parks are smooth and distinct, which are evidence of many, many years of deposition.
The layers on the rocks are because of different deposition of sediments. Different sediments deposited over the rocks through the wind, water, and ice over the ages.
Have a beautiful day.
Answer:
A virus attaches to a specific receptor site on the host cell membrane through attachment proteins in the capsid or via glycoproteins embedded in the viral envelope. The specificity of this interaction determines the host (and the cells within the host) that can be infected by a particular virus.
Explanation:
The answer to this question is option D
Answer:
C. Center for diseases control
Explanation:
The center for diseases control is the division of the Department of Health that functions to protect and improve the human health. The main function of center for diseases control is to take preventive measures to check the outbreaks of infectious disease, to improve the health of all individuals and to identify and regulate potential factors that may adversely affect the human health.
It uses unicellular cells.
