How does sedimentation threaten the coral reef habitat

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

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.

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12