What allows us to stand upright and keeps us from falling through the ground?

Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon

Pinene is an unsaturated hydrocarbon found in pine resin. if pinene has m+ = 136 and contains 1 double bond(s) and 2 ring(s); what is its molecular formula? enter the formula in the form ch first, then all other atoms in alphabetical order; do not use subscripts. the formula is case-sensitive

Mr. rose asked his student to draw a quadrilateral with four unequal sides. an example of this kind of quadrilateral