Why can viruses typically infect only one host species? Hypothesize why and how certain viruses are able to "jump the species barrier" and infect different species of organisms.

Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?

Which feature of a human community is similar to a niche in a biological community

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a. an ionic bond is formed between the oxygen and carbon atoms. b. four valence electrons are shared. c. two valence electrons are shared. d. valence electrons are shared between oxygen atoms.