Which of the following is not a valid conversion factor?

What protects the lining of the stomach from acidic gastric juices?

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 type of stimulus do mechanoreceptors detect? sound pain heat light