Rna viruses, like flu viruses, can mutate. how does this the virus stay in the environment?

Embryonic stem cells are cells derived from an embryo. these cells can be used to create new tissues for patients suffering from certain illnesses and disorders. which statement best summarizes why the use of embryonic stem cells could be seen as unethical?

According to the cladogram, which organisms have roundworms as a common ancestor?

What terms describes being out of water after being submerged