Which would result a farmer in producing more food at a lower cost?
A)planting wheat that is resistant to weed killer B)breeding pear trees that grow sweeter fruits C) growing rice that only grows in warm climates D)producing vegetable oil that has added vitamin A

there are two significant figures.

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.