What came first the chicken or the egg?

Which beat describes the brain stem

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound