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- Nervous system (3163 bytes)
1: ...anatomy)|organ]]s, constructs and processes input from the [[sense]]s, and initiates [[action (philoso...
3: ... Thus it is the system that animates "animals" ([[sponge]]s are an exception). Chemicals that target the a... - Iron Age (8996 bytes)
1: [[image:Axe of iron from Swedish Iron Age, found at Gotland, Sweden.jpg|...
10: ...then as a by-product of [[copper]] refining, as [[sponge iron]], and was not reproducible by the metallurg...
12: == The Iron Age in Africa and India ==
13: ...[East Africa]] ([http://www.wsu.edu:8080/~dee/CIVAFRCA/IRONAGE.HTM ''Washington State University'']) w...
15: ...ologically superior Bantu spread across southern Africa and became rich and powerful, producing iron f... - Minnesota (26682 bytes)
37: Its name is from the [[Lakota#The_Dakota|Dakota people's]] name ...
54: Much of the state was purchased from [[France]] as part of the [[Louisiana Purchase]], alth...
59: ...e [[M鴩s people (Canada)|M鴩s]] people, a mixed French and Native American culture, were a presence ...
61: Modern [[immigrant]]s have come from all over the world in recent decades, with [[Hm...
63: ...with the early Scandinavian immigrants. Families frequently own or share [[cabin]]s on central and no... - Animal (16429 bytes)
8: [[Sponge|Porifera]] (sponges)<br>
51: ... which ''animalia'' is the plural, and ultimately from ''anima'', meaning vital breath or soul.
55: With a few exceptions, most notably the [[sponge]]s (Phylum [[Porifera]]), animals have bodies dif...
57: ...During development it forms a relatively flexible framework upon which cells can move about and be reo...
63: ...produced without mating, or in some cases through fragmentation. - Animals (10378 bytes)
2: ...acteristics that define them and distinguish them from other life forms. Animals are divided into vari...
8: ... respond to their environment. This system ranges from simple nerve nets in cnidarians (jellyfish, for...
10: ...exual reproduction involves the fusion of gametes from two individuals, leading to genetic diversity.
11: ...ack cell walls, a feature that distinguishes them from plants and fungi. They have a more flexible cel...
16: With a few exceptions, most notably the [[sponge]]s (Phylum [[Porifera]]), animals have bodies dif... - Dolphin (13554 bytes)
13: ...ated to [[whale]]s and [[porpoise]]s. The name is from [[Ancient Greek]] δελφ̥...
26: ...pecies of dolphin in 17 genera. They vary in size from 4 ft (1.2 m) and 88 lb (40 kg) ([[Maui's Dolphi...
49: **** [[Atlantic Spotted Dolphin]], ''Stenella frontalis''
64: **** [[Fraser's Dolphin]], ''Lagenodelphis hosei''
87: **** [[Boto]] (Amazon River Dolphin,)''Inia geoffrensis'' - Bottlenose Dolphin (16802 bytes)
19: ...t the underside. This makes them hard to see both from above and below when swimming. The elongated up...
21: ... length from 2 to 4m (6 to 13 feet) and in weight from 150 to 650kg (330 to 1430 pounds) with males be...
23: ...y)|homologous]] to the forelimbs of land mammals (from which dolphins and all other [[cetacea]]ns evol...
33: ...nded them for forty minutes, preventing an attack from the shark, as they returned to shore. (See [6]...
43: ... sounds are emitted in a focused beam towards the front of the animal. They have two small ear opening... - Fungus (12992 bytes)
18: ...rd]]s, and [[insect]]s, with consequences varying from mild itching to death. Other parasitic fungi in...
26: ...y the most conspicuous part of any fungus are its fruiting bodies—reproductive structures that p...
28: ...tic]]''. Fungi generally have [[cell wall]]s made from [[chitin]], hemicellulose, lipids, protein and ...
30: ...m|sporangia]]'''. A few other fungi have reverted from a mycelial to a unicellular organization. These...
34: ...m a mating bridge. The result is that nuclei move from one mycelium into the other, forming a [[hetero... - Iron (23778 bytes)
135: ...of iron in the various layers of the Earth ranges from high at the inner core to about 5% in the outer...
137: ...ed from iron ore, and is hardly ever found in the free (elemental) state. In order to obtain elementa...
146: ...icance is that of an intermediate step on the way from [[iron ore]] to [[cast iron]] and [[steel]].
154: ... northern and western European languages, derives from the [[Etruscan]] ''aisar'' which means "the god...
156: ...then as a by-product of [[copper]] refining, as [[sponge iron]], and was not reproducible by the metallurg... - Lanthanum (10184 bytes)
109: ** [[Infrared]] absorbing glass.
110: ...] [[Lens (optics)|lenses]], because of the high refractive index and low dispersion of rare-earth glas...
116: * [[Hydrogen sponge alloy]]s can contain lanthanum. These alloys are ...
124: ...g the resulting salt with dilute [[nitric acid]]. From the resulting solution, he isolated a new rare ...
126: The word ''lanthanum'' comes from the Greek ''lanthanein'', to lie hidden. - Titanium (20884 bytes)
118: ... point]] of this element makes it useful as a [[refractory metal]]. Titanium is as strong as steel, bu...
125: ... titanium dioxide are excellent reflectors of [[infrared radiation]] and are therefore used extensivel...
143: ...amed it ''menachite''. At around the same time, [[Franz Joseph Muller]] also produced a similar substa...
145: The metal has always been difficult to extract from its various ores. Pure metallic titanium (99.9%...
147: ...ties of titanium when a European company set up a front for the US foreign intelligence agencies to pu... - Peruvian Hairless Dog (2941 bytes)
40: ... 60 cm or 20 to 24 inches). The smallest weighs from 4 kg (9 lb) and the largest up to 25 kg (55 lb)...
48: ...on for being clean, for being easy to wash with a sponge, and for a natural lack of [[flea]]s or other [[p... - Urethra (2931 bytes)
24: ...urethral glands, that help protect the epithelium from the corrosive urine.
38: * [[Urethral sponge]] - Eggplant (2577 bytes)
17: ... purple or white [[fruit]]. The raw fruit has a [[sponge]]like [[texture]] and somewhat disagreeable taste...
19: ...inese eggplant usually have a [[color gradient]], from white at the stem to bright purple to deep purp...
21: ... with a dark plum-color. This name comes from the French ''aubergine''.
24: The word ''melongena'' is from the [[Sanskrit]] ''vatinganah'', which has prod...
34: * [[Caviar d'aubergine]] (French [[Provencal Cuisine]]) - Marine Life (10377 bytes)
4: Marine biology covers a great deal, from the microscopic [[plankton]], including femtopl...
6: ...nvestigation in marine biology include everything from the tiny layers of surface water in which organ...
29: ...topus]], [[Crustacean]]s, Poriferas including [[sponge]]s, [[Bryozoa]], [[Echinoderm]]s including star...
36: Fish breathe under water by extracting [[oxygen]] from sea water through their gills.
59: ... at these depths is extreme and there is no light from above, but some life still exists here. Small f... - Sea Spiders (6456 bytes)
21: ...pproximately 1,000 known species, ranging in size from 1-10 mm to over 90 cm in deepwater species: mos...
23: ...ave caused some taxonomists to remove sea spiders from this grouping.
25: ...]]. A [[proboscis]] allows them to suck nutrients from soft bodied invertebrates, and their digestive ...
27: ...orous and feed on [[cnidarian]]s, [[hydroid]]s, [[sponge]]s, soft [[coral]]s, [[polychaete]]s and [[bryozo...
30: ...ders,? live in many different parts of the world, from Australia, New Zealand, and the Pacific coast o... - Brittle star (5616 bytes)
2: ... star.JPG|250px]] | caption = A brittle star on a sponge}}
13: ...|left|Fossil brittle star ''Palaeocoma egertoni'' from the Jurassic of England]]
20: ...r parts of this range. Ophiuroids are known even from abyssal (> 6000m) depths. However brittle star...
27: ...ral body disk in ophiuroids is sharply marked off from the arms. The disk contains all of the viscera...
33: Ophiurid arm cross section. from Biodidac.Arms: Both the Ophiurida and Euryalid... - Bioerosion (422 bytes)
1: ... [[mollusk]]s, [[Polychaete|polychaete worms]], [[sponge]]s, [[crustaceans]], [[Echinoderm|echinoid]]s, an... - Invertebrate (1366 bytes)
3: ...[[phylum|phyla]], from simple organisms such as [[sponge]]s and [[flatworm]]s to complex animals such as [... - Paleozoic (2894 bytes)
3: ... [[North America]]), and [[Permian]]. It extended from roughly 542 [[MYA]] to roughly 251 MYA. It foll...
5: The Paleozoic covers the time from the first appearance of abundant, hard-shelled ...
9: ... confined to [[bacterium|bacteria]], [[algae]], [[sponge]]s and a variety of somewhat enigmatic forms know...
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