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2007-03-31 07:54:44 · 3 answers · asked by Anonymous in Science & Mathematics Biology

3 answers

Survival of the fittest.

2007-03-31 07:57:42 · answer #1 · answered by Anonymous · 0 0

Animals:
1. heterotrophic
2. multicellular
3. cells without cell walls
4. nervous systems (except sponges)

2007-03-31 07:59:07 · answer #2 · answered by ecolink 7 · 0 0

5. symmetry

2007-03-31 16:08:06 · answer #3 · answered by Ms ELW 3 · 0 0

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