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This means that the two separate rocks were once part of one piece of rock. These layers got separated most probably by continental drift as a result of tectonic plate movements. An example of such a fossil is the Mesosaurus, a freshwater crocodile-like reptile, that is found in Southern Africa and Eastern South America continents- that means they were once one land mass.
The environment in these two separate layers would most likely be different. As the layers drift apart from each other , they drift across latitudes that are determinants of climate in a region. Therefore, even the organisms in these two rock layers will evolve differently (even though they will share a common ancestor) in adaptation to respective environments – this is called allopatric speciation.
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Explanation:
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By electric power station, where charcoal is used to produce electric energy.
Organism in an eniornment can compte for food
The markers and colored buoys serve as the "traffic signals" that direct boats to safety. Lateral navigation markers and non-lateral markers of the US Aid to navigation System must be learned for all operators. A green-lighted buoy marks the border/edge of the channel on the operators' port (left side) as the boat enters from open sea. The odd number 3 signals your direction and distance in returning from open sea( as the number increases).
