Dictionary » I » Island

Island

Island

1. (Science: geography) a tract of land surrounded by water, and smaller than a continent. Cf. Continent.

2. Anything regarded as resembling an island; as, an island of ice.

Origin: oe. Iland, yland, as. Igland, gland, glond; ig, g, island _ land, lond, land. As. Ig, g, is akin to as. Ea water, river, OHG. Uwa, g. Au meadow, Icel. Ey island, dan. & Sw. O, goth. Ahwa a stream, water, L. Aqua water. The s is due to confusion with isle. Cf. Ait, Eyot, Ewer, aquatic.


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Speciation and Evolution

Exactly, there are still some cacti on the new island, so there's no reason why the strongest (those who can fight away the other birds) shouldn't survive.

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by JackBean
Tue Feb 25, 2014 9:46 am
 
Forum: Evolution
Topic: Speciation and Evolution
Replies: 6
Views: 2603

How Does Natural Selection Create Ordered Variation?

... harmful or neutral. This is based entirely on the environment. So therefore a species could evolve something beneficial (like beetles on a windy island getting shorter wings, meaning they don't get blown off so easily), then in the very next generation, the environment could change so that's ...

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by Doom
Tue Jan 21, 2014 11:35 pm
 
Forum: Evolution
Topic: How Does Natural Selection Create Ordered Variation?
Replies: 7
Views: 1477

How Does Natural Selection Create Ordered Variation?

... harmful or neutral. This is based entirely on the environment. So therefore a species could evolve something beneficial (like beetles on a windy island getting shorter wings, meaning they don't get blown off so easily), then in the very next generation, the environment could change so that's ...

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by Doom
Wed Jan 15, 2014 6:18 am
 
Forum: Evolution
Topic: How Does Natural Selection Create Ordered Variation?
Replies: 7
Views: 1477

Speciation and Evolution

I agree; both C and D are possible for the first one and we can't exactly tell which one. However, there are some cacti on the new island from which the birds could try to survive. Perhaps some would survive from the cacti on the adjacent island.

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by 1357
Tue Nov 26, 2013 10:14 pm
 
Forum: Evolution
Topic: Speciation and Evolution
Replies: 6
Views: 2603

Speciation and Evolution

Suppose some natural disaster occurs and a species of finch is forced to relocate from its original island where it dined on cactus flowers to an adjacent island with many fewer cacti but an overabundance of orchids. What would be the immediate consequences to the species ...

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by 1357
Mon Nov 25, 2013 4:01 am
 
Forum: Evolution
Topic: Speciation and Evolution
Replies: 6
Views: 2603
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