A tropical rainforest is a place roughly within 28 degrees north or south of the equator. They are found in Asia, Australia, Africa, South America, Central America,Mexico and on many of the Pacific Islands. Within the World Wildlife Fund's biomeclassification, tropical rainforests are thought to be a type of tropical wet forest (ortropical moist broadleaf forest) and may also be referred to as lowland equatorial evergreen rainforest. Minimum normal annual rainfall between 175 cm (69 in) and 200 cm (79 in) occurs in this climate region. Mean monthly temperatures exceed18 °C (64 °F) during all months of the year. Rainforests are home to half of all the living animal and plant species on the planet.
The undergrowth in a rainforest is restricted in many areas by the lack of sunlight at ground level. This makes it possible for people and other animals to walk through the forest. If the leaf canopy is destroyed or thinned for any reason, the ground beneath is soon colonized by a dense tangled growth of vines, shrubs and small trees called a jungle.
Tropical rainforests are currently fragmenting due to human activity. Habitat fragmentation caused by geological processes such as volcanism and climate change have occurred in the past, and have been identified as drivers of speciation. However, fast human driven habits destruction is suspected as being one of the major causes of species extinction.
The rainforests are home to more worldwide species than all other biomes added together. About 80 percent of the world's known biodiversity could be found in forests. The leafy tops of tall trees - extending from 50 to 85 metres above the forest floor - forms an understory. Organic matter that falls to the forest floor quickly decomposes, and the nutrients.
Rainforests are partly characterized by high rainfall. This often results in poor soils due to leaching of soluble nutrients. Generally the soils of rainforests are classified as Oxisols, which are annually replenished with fertile silt.
Rainforests are also often called the "Earth's lungs"; however, there is no scientific basis for such a claim as tropical rainforests are known to be essentially oxygen neutral,it is a main oxygen exchanger with carbon dioxide .
The rainforest is humid. Tall, broad-leaved evergreen trees are the dominant plants, forming a leafy canopy over the forest floor. Taller trees, called emergents, may rise above the canopy. The upper portion of the canopy often supports a rich flora of epiphytes, including orchids,bromeliads, mosses, and lichens, who live attached to the branches of trees. The undergrowth or understory in a rainforest is often restricted by the lack of sunlight at ground level, and generally consists of shade-tolerant shrubs, herbs, ferns, small trees, and large woody vines which climb into the trees to capture sunlight. The relatively sparse under story vegetation makes it possible for people and other animals to walk through the forest. In deciduous and semi-deciduous forests, or forests where the canopy is disturbed for some reason, the ground beneath is soon colonized by a dense tangled growth of vines, shrubs and small trees called jungle.
The temperature ranges from 21°C to 45°C and 125 to 660 cm of rainfall yearly.
Viva Halal AC is concerned with the low deciduous forest which is part of the tropical forest, it is the most damaged and less attended part and it is the closest to all major urban cities of Mexico and the most populated forest by humans.