2007-01-02 13:54:48 · 2 answers · asked by iqbalkhanayesha 2 in Science & Mathematics ➔ Biology
Life is constantly diversifying, at different rates depending on the environmental circumstances. For example, there was a period during the Devonian when marine multicellular animals, which before this had been basically all worm like, suddenly radiated into the thousands of kinds of other marine animals like molluscs (clams, snails, etc) and arthropods (shrimp, insects, etc.). There was another huge expansion in which co-evolution was seen: the flowering plants (angiosperms) and insects radiated enormously.
2007-01-02 14:26:04 · answer #1 · answered by kt 7 · 1⤊ 0⤋
Everything on this planet and (as far as we can understand) in this universe is in a constant state of change and evolution. Much of this happens on timescales that are too fast (think quantum physics) or too slow for humans to really appreciate.
Humans are also geared to notice sudden change and we tend to ignore subtle changes over time.
Hell, we haven't even been a species long enough to really look at evolution with any real experience.
interesting question though. be good to see what comes up.
2007-01-02 22:06:02 · answer #2 · answered by darklydrawl 4 · 0⤊ 0⤋