Source of heat in earth's convection currents is question 10 options: a) the sun b) volcanoes c) the core d) the crust

In general, are there any major differences that you can see? explain

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.

_is a product of the first stage of photosynthesis.atpglucosecarbon dioxidewater