Why are zebra mussels a problem in the Great Lakes but not in the lakes systems where they came from?

B. They have natural predators in the other lakes.

Explanation:

I'm pretty sure that's it, because if it's the lakes they originally came from, then they'd have predators to even their population out.

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.