Pool chemical
* Most pool chemicals are harmful to shrubs, grass and foliage in concentrated from
  - strong oxidisers and many are corrosive
* can also be corrosive
  - be hazardous

### pool:

Billabong
* appear often in Australian literature.
* are depressions in the upper savanna.
+ Billabong (lake): Bodies of water in Australia

### pool:

Cartel
* a. occur in oligopolistic industries.
* are bands
  - illegal in America
  - more popular where the product is homogeneous as with oil, steel, etc
  - private restraints of trade and other forms of coordinated, anticompetitive behavior
* tend to be unstable because of incentives of individual firms to cheat.
  * In economics, a 'cartel' group of formerly independent companies who overtly agree to work together. The objectives of cartels are to increase their profits or to stabilize market sales. They do this by fixing the price of goods, by limiting market supply or by other means. Monopolies are not cartels, because in a monopoly there is only one independent company. Cartels are bad for the economy in general and for their customers who are overcharged. Cartels usually occur in oligopolies, where there are a small number of players that control the majority of supply in a market.

Deep pool
* Most deep pools retain water.
* are necessary for many aspects of red-legged frogs' life cycle.
* form in fracture zones and again, rapids form at tributary canyons.
* give steelhead cool water when shallow areas warm up in the summer.
* require swimming or ropes.
* shaded by overhanging oaks, willows and bays provide perfect summer refuge for baby fish.

Gene pool
* Some gene pools consist of individuals.
* adapts for long term survival via offspring.

Plunge pool
* are erosional features which occur in the youthful stage of a river.
* can remain after the waterfall has ceased to exist or the stream has been diverted.

Power pool
* are groups of generators who pool their capacity.
* enable companies to receive power from one another in an emergency.

Risk pool
* are a cost-effective way to solve the problem of the uninsurable population.
* exist in many states and are created by state legislation.
* involve the pre-determined allocation of financial risk in managed care contracts.

### pool:

Rock pool
* are common on some shores.
+ Intertidal zone: Habitats :: Bodies of water
  * Rock pools are common on some shores. These areas is often home to many species of crabs, shellfish, shallow water fish and many other animals. Many environmental things affect these areas, for example, waves, sunlight, salinity, wind, and water tide. About 300,000 species have been found in the intertidal zone. These species have to tolerate the pounding of waves, the changes in temperature, and the drying out at low tide.

Shallow pool
* are common in wooded areas during the spring and wet summers.
* fringes, particularly if grassy, provide protection from predators.

Swim pool
* Most swim pools contain water.
* Most swim pools use equipment
  - own scuba equipment

### pool:

Swimming pool
* Keep water off cover.
* Most swimming pools recirculate their water in a closed loop.
* are athletic facilities
  - fun
  - large space
  - like magnets when it comes to attracting dirt and wind-blown debris
* are located in backyards
  - fitness centers
  - motels
  - parks
  - resort hotels
  - schools
  - ponds
  - singles
  - the leading drowning risk for pre-school children
* are the number one drowning risk for preschool-age children
  - for preschoolers
* are used for competitive events
  - diving
  - exercising
  - family fun
  - laps
  - parties
* can be big trouble for a pet with poor eyesight.
* come in all shapes and sizes.
* contain pesticides, too.
* have chlorine, and cleaning chemicals residue and solvents can be a problem.
* is an athletic facility