Answer:
Option B. Viral genes may be encoded by DNA or RNA, but cellular genes are always encoded by DNA.
Explanation:
Virus is a unique organism having unique characteristics which act as both living and non living. In cell, it is living while outside the cell it is present in crystalline form. Virus is composed of two genome i. e. DNA or RNA. But cell is composed of only DNA genome. There is no nucleus present in virus. Mitochondria and ribosome are also absent.
Meiosis produce variations in daughter cells whereas mitosis produce identical nuclei.
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Answer:
Yes environment plays an important role in human growth, development and health.
Explanation:
As an environment is valuable for all living being so as human need environment to survive .if a person grows in healthy environment that person have positive thinking and can cope with difficult as situation but if the person is grown in unhealthy environment then that person language style all affect people living around that person .as growth and development also is affected by environment and activities performed in that environment
Clay, slit and sand are carried by suspension.
rocks are dissolved by salts and acids to form a solution.