Final answer:
Building more water treatment facilities and using natural gas for fuel are steps toward sustainability, with a focus on sustainable agriculture and energy being crucial. Releasing aquaculture-raised fish and seafloor mining are not sustainable practices.
Step-by-step explanation:
In pursuing sustainability, it is crucial to consider actions that have a significant positive impact on the environment while meeting human needs. Building more water treatment facilities can be a step towards sustainability, as it would help clean and recycle water, making it safe for consumption and reducing pollution. Using natural gas instead of burning petroleum is a more sustainable approach to energy consumption as it typically results in fewer emissions of pollutants like carbon dioxide. However, sustainable practices in agriculture and energy are essential, which would include promoting renewable energy sources and water conservation techniques.
Releasing aquaculture-raised fish into the natural environment can lead to ecological imbalances, while mining the seafloor can be extremely destructive to marine ecosystems. Thus, these are not sustainable practices.
To reach sustainability, it's important to adopt practices that not only address immediate human needs but also ensure the long-term health of our ecosystems. Enhanced water treatment and shifting to cleaner fuel sources, while also prioritizing sustainable agriculture and energy use, present a more holistic approach to environmental protection and resource management.