What is the layer of the sun from wich energy is produced?

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?