What percentage of water on the earth is used for drinking, household needs, community needs, and crop irrigation?

The correct answer to this open question is the following.

Almost 70% of freshwater water on planet Earth is used for irrigation.

Let's have in mind that although 85% of planet Earth is water, it is salty water from the oceans. The rest is water that is considered fresh that can be used by humans. Of that percentage, 70% is used for irrigation in agriculture and the rest is for drinking purposes. That is why is so important to take care of the water because in some places is scarce.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

it's all four options.