Answer:
it must be denitrified.
Explanation:
Decomposition makes the nitrogen available to go through nitrification again. For nitrogen to return to the atmosphere in its gaseous N2 form,
Answer:
Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.
Administer varicella vaccine to the health 6-year old child (who does not have evidence of immunity to varicella) was exposed to a confirmed case of varicella 2 days ago.
Explanation:
It is seen that if a child receives varicella vaccine between 3 to 5 days of exposure, he is safe as disease will not appear in him and would be saved for future infections.
Varicella vaccine is given for prevention against small pox. It is expected once immunised with varicella body will produce antibodies for a span of twenty years or more.
Yes they do have a cell wall
