Why food containing lemon juice should not be cooked on fire

Aheterozygous normal male marries a woman with a sickle cell anemia. give the genotypes and possible phenotypes of the offspring

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

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?