Question

1. environmental variations demonstrate: unchanging natural systems interconnected density - driven currents completely isolated ecological conditions predictable genetic outcomes

Explanation:

Environmental variations show that natural - systems are not unchanging. They also demonstrate that ecological conditions are not completely isolated as different environmental factors interact. Genetic outcomes are not always predictable due to environmental influences. Environmental variations are related to interconnected systems where density - driven currents can be part of the interactions in ecosystems.

Answer:

Interconnected density - driven currents