Which of the following is a common environmental problem caused by mining? a. introduction of invasive species b. contamination of water supplies c. destabilization of earth's mantle d. formation of holes in the ozone layer

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