Which evidence supports the idea that metals should not be used to make artificial reefs?
A.
They will break down over time.
B.
They become covered with coral.
C.
They have caused pollution in the past.
D.
They were tied together and sunk in the 1970s.
C. They have caused pollution in the past.
The evidence that supports the idea that metals should not be used to make artificial reefs includes options A, C, and D.
A. Metals will break down over time, which can lead to structural instability and potential harm to marine life.
C. Metals have caused pollution in the past due to corrosion or leaching of harmful substances, which can contaminate the surrounding water and negatively impact the ecosystem.
D. The fact that metals were tied together and sunk in the 1970s suggests that they were not successful in creating a sustainable artificial reef, potentially due to the issues mentioned above.
To determine which evidence supports the idea that metals should not be used to make artificial reefs, we need to evaluate each option and select the one that aligns with the given idea.
A. The fact that metals will break down over time does not directly support the idea that they should not be used to make artificial reefs. In fact, it is a common characteristic of materials used in reef construction.
B. The option mentioning that metals become covered with coral actually supports the use of metals as artificial reefs. The growth of coral on metal structures is one of the desired outcomes, as it helps create a diverse and robust ecosystem.
C. The option stating that metals have caused pollution in the past is a viable reason to argue against using metals for artificial reefs. Metals can potentially leach harmful substances into the water, causing pollution and negatively impacting marine life.
D. The information about metals being tied together and sunk in the 1970s does not provide evidence for or against the idea that metals should not be used as artificial reefs.
Based on these evaluations, the correct answer that supports the idea that metals should not be used to make artificial reefs is:
C. They have caused pollution in the past.