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- Tree (23723 bytes)
2: ...g|right|thumb|250px|The [[conifer]]ous [[Coast Redwood]], the tallest tree species on earth]]
3: ..., trees are long-lived. A few species of trees grow to 100 m tall, and some can live for several [[mi...
5: ... Trees also play an important role in many of the world's [[mythology|mythologies]] (see [[Tree (myth...
9: ...] of plants. Trees thus show a wide variety of growth form, leaf type and shape, bark characteristics...
11: ...low gives examples of many well known trees and how they are typically classified. - Agriculture (19147 bytes)
3: ...ce of agriculture is also known as '''farming''', while scientists, inventors and others devoted to i...
5: ...her, yet it only accounts for four percent of the world's [[gross domestic product|GDP]].<!--Source?-...
7: == Overview ==
11: ...developed" nations and increasingly so elsewhere, which consists of obtaining financial income from t...
13: ...he practice of agriculture—more formally known as [[agricultural science]]. - Carnivorous plant (44834 bytes)
1: ...te the small entrance to the trap underneath the swollen 'balloon', and the colourless patches that c...
4: grow in places where the soil is thin or poor in nutrients,
6: [[Charles Darwin]] wrote the first well-known treatise on carnivorous plants in 1875.
13: *Pitfall traps ([[pitcher plant]]s), which trap prey in a rolled leaf that contains a po...
14: *Flypaper traps, which trap prey using a sticky mucilage; - Sloth (5489 bytes)
16: ...34 degrees Celsius), and still lower temperatures when resting.
18: ...round, to urinate and defecate, only about once a week.
20: ...ur or absorbed through the skin. Many wild sloths will actually look like they have green fur because...
22: ...tation to living in trees, sloths make competent swimmers.
24: ... indirectly because the mothers sometimes prove unwilling to leave the safety of the trees to retriev... - Forest (3705 bytes)
2: ...orest.jpg|thumb|right|360px|A dense growth of softwoods (a forest) in the Sierra Nevada Range of Nort...
4: A '''forest''' is an area with a high density of [[tree|trees]] (or, historic...
6: ... [[lignin]] and other materials that decompose slowly.
8: ...anopy, which allows some sunlight to penetrate between the trees (see also: [[savanna]]).
14: * [[temperate hardwood forest]] - Economy of Estonia (6977 bytes)
3: ...s a concern, although the economy has high GDP growth (around 5% per annum).
5: ==Economic overview==
6: ...ted the estates and divided them into small farms which subsequently formed the basis of Estonian pro...
8: ...d the United Kingdom. Only 3% of all commerce was with the [[U.S.S.R.]]
10: ...Estonian industries which had locally available raw materials, such as oil-shale mining and phosphori... - Temperate coniferous forests (2732 bytes)
1: ...ood]] and [[yew]]. The understory also contains a wide variety of herbaceous and shrub species.
3: ..., and are often subject to ecologically important wildfires.
5: ...forests of [[New Zealand]] and [[Tasmania]], northwest [[Europe]] (small pockets in [[Ireland]], [[Sc...
7: ... [[California]] and southwestern [[Oregon]] is known for its rich variety of plant and animal species... - Climate change (15859 bytes)
1: ...of climate, including precipitation and clouds as well as temperature. Climate changes can be caused ...
3: ...used change [http://www.grida.no/climate/ipcc_tar/wg1/518.htm]. Sometimes the term "anthropogenic cli...
5: ...ttribution of recent climate change]]. For global warming episodes in the geological record, see [[Pe...
8: ...'. Internal factors are those due to interactions within the earth's climate system. External factors...
12: ...glacial were probably caused by events associated with the [[Canadian Shield|Laurentide]] ice sheet a... - Global warming (53726 bytes)
3: ...n dioxide]] (CO<sub>2</sub>). The alternative view, that the principal causes are natural cycles suc...
5: ...over the next one hundred years due to the lag in warming caused by the oceans.
7: ...effects by causing [[flood]]s, [[drought]]s, heat waves, reduction of [[agricultural]] yields or in e...
11: ...used change [http://www.grida.no/climate/ipcc_tar/wg1/518.htm]. Sometimes the term "anthropogenic cl...
16: ...ed Kingdom]] and the [[United States]] [http://www.royalsoc.ac.uk/displaypagedoc.asp?id=13057]. - Wildfire (23185 bytes)
2: [[image:Wildfire-ISS007_Mosaic2.jpg|thumb|400px|Fire in [[S...
4: ...[Australasia]]), is an uncontrolled [[fire]] in [[wildland]] often caused by [[lightning]]; other com...
8: ...ople misunderstanding the expression "spread like wildfire". [[Image:Forestfire5.jpg|right|thumb|265p...
12: ...ft|thumb|199px|Green Knoll Wildfire in [[Jackson, Wyoming]]]]
14: ...olve destruction of suburban homes located in the wildland urban intermix. - Carbon (15360 bytes)
4: ...edrally to four others, making a 3-dimensional network of puckered six-membered rings of atoms.
5: ...y to three other atoms, making a 2-dimensional network of flat six-membered rings; the flat sheets ar...
6: ...lly, forming spheroids (of which the most well-known and simplest is the buckminsterfullerene or buck...
10: ...: a low-density web of graphite-like clusters, in which the atoms are bonded trigonally in six- and s...
11: ...ed trigonally in a curved sheet that forms a hollow cylinder. - Hydrogen (20221 bytes)
8: <tr><td rowspan="3" valign="center"> <br />'''H'''<br />...
28: <td>[[Atomic weight]] </td><td>1....
34: <td>[[van der Waals radius]] </td><td>120...
73: ... </td><td> 0.1815 [[watt per metre-kelvin|W/(m*K)]]</td></tr>
80: {| border="1" cellspacing="0" cellpadding="2" width="100%" - Ecology (24417 bytes)
1: ...itat (ecology)|habitat]]. The term ''oekologie'' was coined in [[1866]] by the German biologist, [[E...
4: ...ome sub-disciplines contributing to ecological knowledge.
6: ...ntal issues. Additionally, a [[holism|holistic view]] of nature is stressed in both ecology and envir...
8: Consider the ways a biologist might approach studying the life o...
9: ... of the [[queen bee]], and how she relates to the worker [[bee]]s and the [[drone (bee)|drones]]. - Food chain (2419 bytes)
1: ...f material and energy from one species to another within an [[ecosystem]].
3: ...like those forming the base of deep sea vent food webs, are [[chemotroph]]ic.
7: ...hey usually start with a primary producer and end with a large [[predator]]. Here is an example of a...
11: This "chain" can be described as follows: Killer whales (''Orca'') feed upon seals, that feed upon s...
13: == Food web == - Temperate rain forest (5436 bytes)
3: ...distinguished from other temperate forests by a few factors:
4: ...pending on latitude), usually from moisture-laden winds off the ocean.
5: ...asonal variations in temperature, creating milder winters and cooler summers than continental-climate...
6: * Coastal mountains: temperate rain forests occur where mountains ranges are close to the coast; coas...
10: ..., southwestern [[South America]] and northern [[New Zealand]]. - Lima bean (3691 bytes)
5: {{Taxobox_divisio_entry | taxon = [[flowering plant|Magnoliophyta]]}}
17: ...' (''[[Phaseolus]] lunatus'', [[Fabaceae]]) is grown as a [[vegetable]] for its mature and immature [...
21: ... BC, produced a large-seeded variety (Lima type), while the second, taking place most likely in [[Mes...
23: ...uted in [[Ecuador]] and the north of [[Peru]], between 320 and 2030 meters above sea level.
25: ...d, orange and variously mottled seeds are also known. The immature seeds are uniformly green. - Maize (12434 bytes)
6: {{Taxobox divisio entry | taxon = [[Flowering plant|Magnoliophyta]]}}
16: ...(''Zea mays'' ssp. ''mays'') is a [[cereal]] that was domesticated in [[Mesoamerica]]. It is called '...
18: ...been bred for a high-end height of 2.5 m (9 ft). Sweet corn is usually shorter than field corn variet...
22: ...chew without cooking them tender first in boiling water.
24: ...otein [[gluten]], and therefore makes baked goods with poor raising capability. - Copepods (3800 bytes)
9: ...ority | author = [[Henri Milne-Edwards|H. Milne-Edwards]] | date = [[1840]]}}
24: ...animal]]s living in the sea and nearly every freshwater habitat, a form of [[plankton]], specifically...
26: ... The group contains 10 [[order (biology)|order]]s with some 14 000 described [[species (biology)...
28: ...[[biomass]] on earth. They compete for this title with the [[Antarctic krill]] ''Euphausia superba''.
30: ...und between copepods and [[cholera]] in untreated water. - Sloths (6298 bytes)
15: ...34 degrees Celsius), and still lower temperatures when resting.
17: ...round, to urinate and defecate, only about once a week.
19: ...ur or absorbed through the skin. Many wild sloths will actually look like they have green fur because...
21: ...tation to living in trees, sloths make competent swimmers.
23: ... indirectly because the mothers sometimes prove unwilling to leave the safety of the trees to retriev... - Biodiversity (11106 bytes)
5: ...earch Council]] (NRC). The word ''biodiversity'' was suggested to him by the staff of NRC, to replac...
7: ...cerned citizens worldwide. This use has coincided with the expansion of concern over [[extinction]] o...
10: ...icro-organisms, their genes and the ecosystems of which they are a part.
12: ...Diversity'' in this definition includes diversity within species and among species, and comparative d...
14: ...y unified view of the traditional three levels at which biodiversity has been identified:
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