Populus Tremuloides

Populus tremuloides is a deciduous tree native to the colder areas of North America. The species is known aspen, aspen, and Quakies, the names are derived from the leaves that flutter in the breeze. Plant a tree has large trunk, up to 25 meters, with smooth pale bark, marked with black. Leaves bright green, dull below, turn to gold to yellow, rarely red in the fall. The species rarely flowers, often spread through their roots to form large groves.

The name refers to tremors or shaking of the leaves is produced, even a slight breeze due to the flattened petioles. The specific epithet, tremuloides, this feature is given for shaking. Other species of Populus with flattened petioles partially along its length, while the aspen are flattened from side to side along the entire length of the petiole. This quake leaves producing a light that many consider the hallmark of aspen. Can be found in most of North America.
One of several species referred to the common name of Aspen, or American poplar, trembling aspen mountain or gold, the name poplar, trembling of the Alamo, is used with Quakies, Quakers, Popple, White Poplar and aspen Alamo.
The female gives the name of Waverly means aspen or aspen Dehesa.

A tall tree of rapid growth, usually 20 to 25 meters (66-82 feet) at maturity, with a trunk 20 to 80 centimeters (7.9 to 31 inches) in diameter, the records are 36.5 meters (120 feet) high and 1.37 meters (4.5 feet) in diameter.
The bark is relatively smooth greenish white to gray and is characterized by thick black horizontal scars and prominent black knots.
Leaves of mature trees are almost round, 4. 8 centimeters (1.6 to 3.1 inches) in diameter with small rounded teeth, and 3.7 centimeters (1.2-2.8 in) long petioles, smooth. Young trees (including root suckers) are much higher-10-20 centimeters (3.9 to 7. 9 inches) long, almost triangular leaves.
The flowers are catkins 4.6 centimeters (1.6 to 2.4 inches) long, produced in early spring before the leaves, is dioecious, with male and female catkins on different trees. The fruit is a 10-centimeter (3.9 inches) long hanging chain 6 mm (0.24 inches) capsules, each capsule containing about ten minutes seeds soaked cotton lint, which aids wind dispersal of seeds when ripe in early summer.

Coconut

The coconut, Cocos nucifera, is a member of the family Arecaceae (palm family). It is the only accepted species in the genus Cocos. Coconut term can refer to the whole coconut, seeds or fruit, which is not a nut botanist. Coconut, is an ancient spelling of the word. 
Found in most parts of the tropics, coconut is known for his versatility as seen in the many domestic, commercial and industrial of its different parts. Coconuts are part of the daily diet of many people. Its known as the endosperm is edible "meat" of coconut when dried is called copra. The oil and milk derived from it are commonly used for cooking and frying oil, coconut oil is also widely used in soaps and cosmetics. Coconut water is the clear liquid in a refreshing and can be processed to create alcohol. The husks and leaves can be used as material to manufacture a variety of products to furnish and decorate. It also has a cultural and religious significance in many societies that use it.

Cave

A cave or cavern is quite natural large underground space for a human to enter. Some people [who?] Suggest that the term cave should only apply to natural cavities in which one party is in total darkness, however, in popular usage, the term includes smaller spaces such as rock shelters, sea caves , and caves. 

Speleology is the science of exploration and study of all aspects of the caves and the area surrounding the caves. Exploring a cave for recreation or science may be called caving, potholing, or, in Canada and the United States, spelunking (caving see). 

The formation and development of caves known as speleogenesis. The caves are formed by different geological processes. These may include a combination of chemical processes, water erosion, tectonic forces, microorganisms, pressure, atmospheric influences, and further excavation. 

Most caves are formed in limestone by dissolution.

River

A river is a natural watercourse, usually freshwater, flowing toward the ocean, a lake, a sea or river to another. In some cases, just a river flows into the soil or dry completely before reaching another body of water. small rivers can also be called by various names, including brook, stream, creek, stream, tributary and creek, there is no general rule that defines what can be called a river, although in some countries or communities in a stream can defined by their size. Many names for small rivers are specific to geographic location, an example is "burn" in Scotland and northeast England. Sometimes a river is said to be larger than a creek, but not always so, because of the vagueness of language. 

A river is part of the hydrological cycle. Water in a river is generally collected from precipitation through surface runoff, groundwater recharge, springs, and release of water stored in natural ice and snow accumulation (eg, glaciers). Potamology is the scientific study of rivers.