WEIT Chap4

The Geography of Life

make a short introduction before digging the subjetPierre.brawand 19 avril 2011 à 22:45 (CEST)

Continents

What is convergent evolution?

Convergent evolution explains how two differents spieces that live in similar habitats can look and behave in the same way, because of their environment.
Convergent evolution proves three evolutionary theories:

1. Common ancestry, which explains the features shared (ou pas) between two infraclasses of mammals.

2. Speciation is the process by which a common ancestor can generate several different offsprings.

3. Natural selection expresses how each spieces adapted to its own environment.

How can similar species live in similar habitats but on different continents?

Indeed, although...

AllanP 5 avril 2011 à 14:37 (CEST)
EstelleV 5 avril 2011 à 14:49 (CEST)
HéloiseD 7 avril 2011 à 11:09 (CEST)

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