Does anyone know a landform starting with the letter z? answer. i will need the answer fast it's for my assignment due the twenty third on february 2015.

What are some possible short and long term medical concerns for crew members on longer space exploration trips

Which statement explains how gravity and intertia work together

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.