How would you record the measurement of 65,000 km to 4 significant figures???

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Explain why scientists use shared characteristics to make cladograms.