What kind of virus, which started spreading last weekend, affected more than 200,000 victims in about 150 countries worldwide?

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

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.

As a result of these processes the single celled organism accomplishes