Answer:
Probably the 1 million one because it is the closest time or ancestor to the current horse.
Explanation:
The carbon that plants need for photosynthesis comes from carbon dioxide, or CO2 that's present in our atmosphere.
Eukaryotic cells have one nucleus inside a membrane.
Prokaryotic do not have a membrane bound nucleus nor <span>mitochondria.
Also, please note the following:
Mitochondria is the powerhouse of the cell
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