Name two functional capabilities that are absent from viruses that make them dependent on a host cell for the ability to replicate themselves?

Which sequence correctly shows the path of carbon dioxide during repiration?

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.