<span>Epithelium made up of a single layer of flattened scalelike cells</span>
Darwin's proposed mechanism for evolution is natural selection. Natural selection allows species to respond to their surroundings through time, or to become progressively excellently-suited. Natural selection is environmentally based and involves established heritable variation within a population.
They lead to changes in species over time:
- Darwin suggested species will evolve over time, new species originate from pre-existing species, and all species share a common ancestor with each other.
- In this framework each organism has its own special set of heritable i.e genetic variations from the common ancestor that have slowly developed over very longer periods of time.
- Parroted branching activities that isolate new species from a common ancestor create a multi-level tree that connects all living organisms.
Im pretty sure its 20,000-25,000
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l need the choseises to pick the correct one
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Coconut dispersal mechanism: Coconut seed disperse through water. The main reason for this dispersal is due to presence of coconut plant on the bank of sea. When the seed of coconut tree matures, it falls from the tree into water. This seed floats in the water and goes on beaches where they sprouts and become a new tree. Coconut seed is big in size so it cannot dispersed through wind and animals.