How many valence electrons do elements in group 14 have

Chicken pox and hepatitis are bacterial diseases. true or false?

Anormal appearing couple is found to be heterozygous recessive for albinism both have the genotype aa the gene responsible for albinism is recessive to the normal pigment-producing gene what are the changes of their children being albino

Which of the claims below does this model support? select all the claims that are supported