They communicate with eachother with chemical signals which is a protein called cyclin being used.
Answer:
Various physical (heat, irradiation and pH effects) and chemical compounds (potassium permanganate, formalin, ethanol, etc.) could destroy the virus. Fumigation of buildings and incubators can be used to kill the virus. Infected chickens are the primary source of virus.
Explanation:
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i would say the answer is 3
The answer is B.) Condyloid joint.