cykieadriess soil
Warm water holds less oxygen
depends on what kind but usually less
It depends what kind you have... If its density is less then the water it is floating in, yes.
sand
no, warm air holds more water vapour than cold air
It weight is less because a sponge holds water and during the intervening day some of this has evaporated.
No, possibly there's more. Scientifically, extreme cold water holds more dissolved oxygen than warm water. As well, fresh water holds more oxygen than sea water. Ninety-eight percent of the Antarctic is covered with an ice sheet containing about 70% of the earth's fresh water.
Dissolved oxygen decreases with temperature because warmer water holds less oxygen than cooler water. As water temperature rises, the molecules move faster and are less able to hold onto oxygen molecules, causing a decrease in the amount of dissolved oxygen in the water.
It all depends on just how many "others" your are referring to, and what kind of license (or restrictions) you may have.
If air is holding as much moisture as it can, colder air holds less than warmer.
Black spots will appear in water when there is a Pokemon there, the Pokemon will be less common than the others on the route
Because some objects are a lot denser than water so the sink and others are less denser so they float