Which event is part of a convection current in the air? A. Cool air sinks.
B. Cool air rises.
C. Warm air swirls.
D. Warm air sinks

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Based on its chemical properties, identify the position of each chemical family on the periodic table.