Ions can consist of more than one atom.
a. true
b. false

During which movies do spring tides new moon first quarter waxing gibbous waxing

Which characteristics can be used to differentiate star systems? check all that apply.

Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?