Instruct: Given a question, retrieve passages that answer the question.
Query: What does it mean to be an evergreen tree?
In botany, an evergreen is a plant that has leaves throughout the year, always green. This is true even if the plant retains its foliage only in warm climates, and contrasts with deciduous plants, which completely lose their foliage during the winter or dry season. There are many different kinds of evergreen plants, both trees and shrubs. Evergreens include:
Deciduous trees predominate in most of these forests, and during the drought a leafless period occurs, which varies with species type. Because trees lose moisture through their leaves, the shedding of leaves allows trees such as teak and mountain ebony to conserve water during dry periods. The newly bare trees open up the canopy layer, enabling sunlight to reach ground level and facilitate the growth of thick underbrush. Trees on moister sites and those with access to ground water tend to be evergreen. Infertile sites also tend to support evergreen trees. Three tropical dry broadleaf forest ecoregions, the East Deccan dry evergreen forests, the Sri Lanka dry-zone dry evergreen forests, and the Southeastern Indochina dry evergreen forests, are characterized by evergreen trees.
Chocolate is made from cocoa beans, the dried and fermented seeds of the cacao tree ("Theobroma cacao"), a small, 4–8 m tall (15–26 ft tall) evergreen tree native to the deep tropical region of the Americas. Recent genetic studies suggest the most common genotype of the plant originated in the Amazon basin and was gradually transported by humans throughout South and Central America. Early forms of another genotype have also been found in what is now Venezuela. The scientific name, "Theobroma", means "food of the gods". The fruit, called a cacao pod, is ovoid, long and wide, ripening yellow to orange, and weighing about when ripe.
Creating the Tree Charter: To create this Tree Charter, thousands of tree ‘stories’ were collected from people across the UK about what trees and woods mean to them. A tree story is any expression of what trees and woods mean to people. They can be a sentence or longer phrase, a photo, audio clip or video. The tree stories were collected until the end of February 2017.
Tropical evergreen forests (or "tropical rainforests") are usually found in areas receiving more than 234 cm of rainfall and having a monthly mean temperature of 20 °C or higher in the coldest months. They occupy about seven percent of the Earth's surface and harbour more than half of the planet's terrestrial plants and animals. Tropical evergreen forests are dense, multi-layered, and harbour many types of plants and animals. These forests are found in the areas receiving heavy rainfall (more than 200  cm annual rainfall). They are very dense. Even the sunlight does not reach the ground. Numerous species of trees are found in these forests. Different types of trees shed their leaves at different times of the year. Therefore, these forests always appear green and are known as evergreen forests. These forests are found in the Andaman and Nicobar Islands, along with the slopes of the Western Ghats and parts of Northeastern states of Assam, West Bengal and Odisha. These areas experience hot and humid climate with the short dry season. The important trees of these forests are rosewood, ebony and mahogany
The species is very similar in taste and odor to the related common onion, "Allium cepa", and hybrids between the two (tree onions) exist. "A. fistulosum", however, does not develop bulbs, and possesses hollow leaves ("fistulosum" means "hollow") and scapes. Larger varieties of the "A. fistulosum" resemble the leek, such as the Japanese "negi", whilst smaller varieties resemble chives. "A. fistulosum" can multiply by forming perennial evergreen clumps. It is also grown in a bunch as an ornamental plant.
Narcondam Island is almost entirely covered with Evergreen and Moist Deciduous forest. Grassy slopes dominate the southern and southeast aspects of the hill (BirdLife International 2001). The island is covered with Tropical Evergreen forest, Semievergreen forest, Moist Deciduous forest, Littoral forest and Mangrove forest (Pande et al. 1991). The island bears old, dead and decaying trees, interlaced with thorny creepers and luxuriantly flowering tall trees (Yahya and Zarri 2002a). The flora on the higher reaches of the hill is mostly evergreen and consists of Dipterocarpus, Sideroxylon and Ficus trees. However, some deciduous species (Bombax insigne) are also present. The vegetation towards the summit is mostly Moist Evergreen with several epiphytes. The lower hills following the shoreline have both deciduous and evergreen trees such as Terminalia catappa, T. bialata and Caryota mitis. The shoreline has some introduced species such as coconut and banana.
The ecological requirements of the genus are those of fog moisture precipitating almost continuously in a natural habitat, cloud-covered for much of the year. These species are found in tropical forests, subtropical temperate evergreen, or montane evergreen forests, which are a type of rainforest or cloud forest. The ecosystem is characterized by high humidity, no seasonal changes, and a wide variety of botanical and zoological species, but also highly fragile against external aggressions. The temperate evergreen and evergreen forests are typically multispecies with evergreen and hardwood trees, reaching up to 40 m in height. The forests are made up of laurel-leaved evergreen hardwood trees, harbouring a rich biota of understorey plants, invertebrates, birds, and mammals. It is present in tropical and subtropical montane rainforest, laurel forest, in the weed-tree forests in valleys, mixed forests of coniferous and deciduous broad-leaved trees, "Tsuga" forests; from northern Vietnam to the Himalayas.
Calodendrum is a genus of medium-sized evergreen trees comprising two species from Africa. "Calodendrum capense" (Cape Chestnut) is a well known tree that is widely cultivated, while "Calodendrum eickii" is a rare forest tree from Tanzania. The botanical name comes from Greek, "kalos" means beautiful and "dendrum" means tree. Both species are harvested for their timber in Africa.
Eight species are found in North America. They can be divided into two subgroups:"Tamarix aphylla" (Athel tree), a large evergreen tree, does not sexually reproduce in the local climate and is not considered a seriously invasive species. The Athel tree is commonly used for windbreaks on the edge of agricultural fields and as a shade tree in the deserts of the Southwestern United States.The second subgroup contains the deciduous tamarisks, which are small, shrubby trees, commonly known as "saltcedars". These include "Tamarix pentandra", "Tamarix tetranda", "Tamarix gallica", "Tamarix chinensis", "Tamarix ramosissima", and "Tamarix parvifolia".
"Rapanea melanophloeos" is a dense, graceful, evergreen tree. Its leaves, stalks and berries often have a purple or maroon color. This tree is usually dioecious (male and female flowers on different trees) and birds are attracted by its tiny, dark purple berries.
The specific name 'melanophloeos' means 'black bark' and resulted from a mistaken identification of the source tree as Swartbas ("Diospyros whyteana").
A degenerate tree is a tree where for each parent node, there is only one associated child node. It is unbalanced and, in the worst case, performance degrades to that of a linked list. If your add node function does not handle re-balancing, then you can easily construct a degenerate tree by feeding it with data that is already sorted. What this means is that in a performance measurement, the tree will essentially behave like a linked list data structure.
The Sierra Juárez is one of Oaxaca State's wettest areas and richest in forest diversity, with perhaps 2,000 of the 8,000 or more plant species that are found in the state.
It is mostly covered by montane cloud forest, but includes tropical evergreen forests and forests of pine, pine-oak and oak. The cloud forest forms a band from in height, up to along the northern and eastern slopes. The climate is cool, 14°-20° C (57°-68° F), and has mean annual rainfall that exceeds and is sometimes much higher. The dominant trees are tall and include evergreen and deciduous species, palms, tree ferns, heather shrubs, vines, and moisture-loving herbs.
The tropical evergreen forest is dominated by evergreen trees tall, with abundant lianas and tropical epiphytes. Pine and pine-oak forests, at a height from have evergreen trees tall, with grasses dominating the lower stratum. Oak forests at a height from grow in areas with relatively lower rainfall that have a dry season in summer. The oak forests are found in the western, inland part of the sierra to the Rio Grande Basin.
Evergreen tree may refer to:
Deciduous trees shed their leaves, usually as an adaptation to a cold or dry/wet season. Evergreen trees do lose leaves, but each tree loses its leaves gradually and not all at once. Most tropical rainforest plants are considered to be evergreens, replacing their leaves gradually throughout the year as the leaves age and fall, whereas species growing in seasonally arid climates may be either evergreen or deciduous. Most warm temperate climate plants are also evergreen. In cool temperate climates, fewer plants are evergreen, with a predominance of conifers, as few evergreen broadleaf plants can tolerate severe cold below about −26°C (−15°F).
In his paper, "Content Ex Machina" Bach argues against over-interpreting what he labels the "contextualist platitude" which he defines as: “Generally what a speaker means in uttering a sentence, even if the sentence is devoid of ambiguity, vagueness, or indexicality, goes beyond what the sentence means.” Bach asserts that context does not establish meaning but is merely one of several conversational principles. He states that “context does not determine (in the sense of constitute), but merely enables the hearer to determine (in the sense of ascertain) what the speaker means.” Context provides constraints on what a speaker can reasonably mean and on what a hearer can reasonably interpret a speaker to mean. “contextualist platitude” does not preclude the “older picture of language and communication” and “a fairly standard semantic-pragmatic distinction.” Pragmatic considerations and context do not contribute to the content of what is said. Bach admits that there is meaning in utterances beyond the semantic content of a sentence, but he maintains that context does not determine speaker meaning but rather constrains how a speaker can expect to be understood and helps the hearer understand what is said. “We need the level of locutionary act and, correlatively, a strict, semantic notion of what is said in order to account for (the content of) what a speaker does in uttering a sentence independently of whatever communicative intention (if any) he has in uttering it and regardless of how the content of that intention may depart from the semantic content of the sentence.” 
His works typically offer readers an approachable invitation to the use of semiotics to help explain everyday phenomena. For instance, his book "Quest for Meaning: A Guide to Semiotic Theory and Practice" provides readers with a simple three-fold way of considering semiotic inquiry as trying to answer "What does it Mean? How does it convey meaning? And Why does it mean what it means?" 
Songahm Taekwondo is the style of martial arts practiced at ATA affiliated schools. Songahm means "Pine Tree and Rock." According to the organization, the term Songahm itself represents "Evergreen strength the year round, long life and a symbol of unchanging human loyalty" as represented by the pine tree and the rock. Soon Ho Lee gave the name, Songahm, and its meaning to his brother, Haeng Ung Lee years before H.U. Lee founded the ATA. In the ATA, the student is compared to a growing pine tree, from a seed (white belt) to a massive tree (black belt).
An evergreen forest is a forest made up of evergreen trees. They occur across a wide range of climatic zones, and include trees such as conifers, live oak, and holly in cold climates, eucalypts, acacias and banksias in more temperate zones, and rainforest trees in tropical zones.
When asked in 1993 by a "The New York Times" Style reporter what it all meant, Cost said, "If you could give us [Cost and Revs] the meaning of life, I’d give you the meaning of us." At that time the posters included a phone number; those who called heard a woman's recorded voice repeat their questions back to them: "My intuition tells me that you're asking yourselves who are Revs and Cost and what are they doing? What is it? What does it mean? What does it mean? What does it mean?"
Cost and Revs continued to write in New York City with impunity, highly visible examples of the graffiti that Mayor Rudolph Giuliani was determined to eradicate. One letter writer called Cost "probably the worst graffiti vandal in the history of New York."
The genus includes species of evergreen trees, endemic to Madagascar and Comoro Islands. Ravensara species are broad-leaved evergreens, the genus including not only shrubs, but also large trees reaching heights in excess of 30 m at maturity.
They are found commonly both as canopy trees to 30m (sometimes very large to 60 m) and sub-canopy trees in the succession climax species in tropical, lower temperate or subtropical broad-leaved forest. Habitats include evergreen broadleaved forest, mixed coniferous-broadleaved forest, low-elevation evergreen forest and littoral rainforest and feature soils of all types.
The Sri Lanka dry-zone dry evergreen forests are made up mostly of evergreen trees, which distinguish them from the deciduous trees that characterize most other tropical dry broadleaf forest ecoregions. The dry-zone dry evergreen forests most closely resemble the East Deccan dry evergreen forests of India's southeast coast.
"Chorus"
Oh what does it mean when the pubs are all packed at five-thirty?
Oh what does it mean when we're all having fish for our tea?
Oh what does it mean when Top of the Pops is on the telly?
Oh yes, the weekend's nearly here;
So sing along with meeee-ee hee hee...
It is an evergreen woody vine with long climbing stems, growing in mixed forests to 20–30 m high where suitable trees, are available, does not grow well as a groundcover plant. It climbs by means of aerial rootlets which cling to the substrate.
There are many different species of evergreen trees that are used for Christmas trees. The most common of these species are classified in one of four genera: pines (genus Pinus), spruces (genus Picea), firs (genus Abies), and cypress (genus Cupressa). In addition to these, the Douglas fir (Pseudotsuga Menziesii) is also commonly used as a Christmas tree, but it is not a true fir. The varieties of trees that a nursery chooses to propagate is dependent upon what type of farm is buying the reproduced plant, the climate of the nursery, the climate of the tree farm where the trees are to be grown, and the preferences of the retail customers.