Biogeography shows that all camels
a. came from ancestors that lived in north africa.
b. came from ancestors that lived in north america.
c. came from ancestors that lived in north egypt.
d. evolved from the llama.

Aprocess in green plants that involves the use of carbon dioxide and water in the production of glucose and oxygen using the suns energy

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.

Explain the process that creates the heat of the sun?