According to Lamarck, the characteristics of organisms changed
because of:
extinction of competitors
a desire or need for that trait
special acts of creation
genetic mutation
chance

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

Kinases add - groups to other enzymes. this activities some enzyme while inhibiting other

The pacific plate is an oceanic tectonic plate. how did a hot and the pacific plate interact to form the hawaiian islands?