Discuss the distribution of earthquakes and volcanoes over the surface of the earth. Are they scattered at random or are they concentrated in zones? Describe your observation.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

In which of the following relationships is one organism always benefited while the other organism is always harmed

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.