Can someone please help me Due today

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?