Answer:
Is polution causing fish to wash up on shore?
Explanation:
This could be testable becuase plution can cause chemicals being released, and debris. Polution is basically trash, so when this trash starts to break down it turns into even smaller pieces, and these pieces can get into fish air ways and block them, or the pieces can be ingested because the fish thought it was food. This then causes issues with the fish because of the chemicals inside the pieces that can cause the fish to die. The pollution can relaese chemicals into the water, and since the chemicals are in the water where the fish are eating, swiming, and breathing it can cause issues resulting in the fish dying.
Yes, education will always be considered a good investment. In fact, the best investment has ever been us in people. Once they learned how to do things properly, they will pass on that learning to the others for free. It's about exchange of ideas and work experience which is more fruitful and extremely profitable on long terms.
Answer:
Make the more important items your general topics.