form where a river ends and becomes a body of water such as a lake or an ocean

       Deltas          form where a river ends and becomes a body of water such as a lake or an ocean

Explanation:

Rivers flow continually from high points (in the mountains) until they reach a broad, extensive body of water at low levels (normally 0 meters altitude), like a lake or an ocean ,where they empty their water and sediments.

The landform created is named delta.

Deltas are regions flooded with many streams of water that find their way to the lake or ocean.

Some examples of deltas are The Mississippi Delta and the Nile Delta.

You can see attached a picture of a delta taken from the internet.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

answer: the primary difference between a hypothesis and a theory is that b hypothesis is falsifiable, but a theory has been proven to be correct. theory is an explanation of something that is happening but hypothesis is a guess of something that can happen

explanation: