A covalent bond is your answer
And a water molecule, this is called a dehydration synthesis. when 2 molecule combine, a water molecule leave.
Predator and prey because herbivores are animals that only eat plants implying they wouldnt eat the carnivore as the carnivore would eat them because carnivores only eat animals such as the herbivore
not sure if that made sense but its B
48.2g SrF2
(hope this helps and correct me if I’m wrong)