The thickest layer that contains the mixture of gases called air is
a. exosphere
b. mesophere
c. stratosphere
d. thermosphere
e. troposphere

Which chemical equation is unbalanced? which chemical equation is unbalanced

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

Amines amides and amino acids are categories of