Which of the following organisms exhibits radial symmetry?

flatworm

butterfly

tadpole

starfish

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Adoença vitiligo afeta qual doença do corpo?

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?