Answer:
C
Viruses need a host to survive.
Explanation:
Answer:
Macrophages
Explanation:
Macrophages can be defined as a phagocytic leukocyte that can engulf a foreign bacterium.
They are cells found in the immune system as mobile white blood cells that are usually develop in response to a dead or damaged cells and even in cases of an infection.
Answer: a compound known as calcium carbonate (CaCO3)
Explanation: Google the question itself