In secondary endosymbiosis, a/an became endosymbiotic in a/an

Endosymbiosis in general is when a cell engulfs another cell and the cell that is engulfed is not broken down and provides function to the engulfing cell. For example, it is thought that eukaryotic cells and organelles such as mitochondria arose from this event. Secondary symbiosis is when an eukaryotic cell engulfs another eukaryotic cell that has already undergone endosymbiosis. So, In secondary endosymbiosis, an eukaryotic cell became endosymbiotic in an eukaryotic cell.

They formed the oceans.  as they melted water was formed and the water made the oceans

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.