Draw a diagram showing how water flows out from the strows

I can't draw a diagram directly, but I can describe the process of water flow from a straw.

When you suck on a straw, you reduce the air pressure inside the straw. The atmospheric pressure pushing down on the surface of the liquid (like water in a glass) is now greater than the pressure inside the straw. This pressure difference forces the liquid up into the straw and into your mouth.

So, the diagram would show:

1. A glass of water.
2. A straw inserted into the water, with the top end in your mouth.
3. Arrows indicating atmospheric pressure pushing down on the water's surface outside the straw.
4. Arrows indicating lower pressure inside the straw due to sucking.
5. An arrow showing the water flowing upwards inside the straw, from the surface of the water in the glass towards your mouth.