Answer:Four types of vaccines are currently available: Live virus vaccines use the weakened (attenuated) form of the virus. The measles, mumps, and rubella (MMR) vaccine and the varicella (chickenpox) vaccine are examples
Answer:
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this isn't an answer just need these points
Explanation:
The same number of proteins in their nucleus.
1.6125 g/cm^3
Density= mass/volume
