Which human activity will have the most positive effect on the global enviroment

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

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

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?