Kareem drew a diagram to compare flatworms and segmented worms which label belongs in the area marked X?

a. can reproduce sexually
b. are always parasites
c. are all sessile
d. are covered in setae

PLEASE HELP

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.