Plzz answer

which of the following is true of bacteria?
a bacteria are always indicative of disease.
b bacteria are single-celled microorganisms.
c bacteria can be seen with the naked eye.
d bacteria are not found on the skin.

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

Which statement names a physical property of wood? wood does not rustwood can burnwood can rotwood is softer than coal

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.