An unknown mineral is scratched by a penny. it must

What would be an example of hypothesis for goldfish respiration lab

Pl which diagram illustrates prophase?

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.