Since an animal only becomes more complex, and not simpler, an ancestor to all organisms would have to be the most simple and primitive organism.
Answer:
The answer is mitochondria.
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Answer:
Well this proves that all living things may be related.
Explanation:
For example, when our ancestors had kids, their kids had their DNA, when those kids had kids, they had some DNA from their grandparents and their parents. DNA is shared by reproduction.
Answer:
Relative Dating with Fossils: Index Fossils as Indicators of Time
Explanation:
Answer:
C: Fire
Explanation:
Natural and anthropogenic (caused by human) fires could lead to destruction of existing climax community. This leaves the habitat open for the secondary succession where a pioneer species can enter. Lava flow and wind are the natural cause of succession while over-cutting of trees is its human cause.