Homologous structures in organisms suggest that the organisms:

have a common ancestor

must have lived at different times

have a skeletal structure

are now extinct

The Sabin vaccine is a liquid containing weakened polio viruses. How do the weakened viruses protect vaccinated individuals against polio because that week end virus.

Which statement accurately describes life in modern Russia?

Darwin's theory of natural selection applies only to birds. A. True B. False

Choose the FALSE statement about nerves. a) Nerve axons are surrounded by a loose connective tissue layer called the endoneurium. b) Nerves consist of parallel bundles of myelinated and nonmyelinated axons.

The responsible organisms, dinoflagellates, are classified as members of the kingdom

Although there are a limited number of amino acids, many different types of proteins exist because? a: size if a given amino acid can very.

Write about major glands associated with the alimentary canal of man and mention their function

Why are phytoplankton important to this ecosystem?

What were characteristics of the Roman empire at its height there are more than 1 answer

What is the hawaiian islands formed by one or several of these which bring new rock to the surface of earth?