Answer asap ! why were certain animals able to survive the ice age?

Which orbitals form a pi bond? a.the s orbital and three p orbitals b.the s orbital and two p orbitals c.overlapping p orbitals d.overlapping hybrid orbitals

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure