The statements you listed show various ways the increased use of copper affects Earth itself. Here’s a breakdown:
A. The amount of available copper ore decreases - This statement aligns with the effects of increased use of copper, as more mining and extraction could lead to depletion of copper ore resources.
B. Copper becomes more expensive because it is rarer - This statement is indirectly related to Earth; while it reflects economic impacts, it also suggests that as copper becomes rarer due to increased use and depletion, it has implications for resource management and sustainability.
C. People are encouraged to recycle copper - This statement positively reflects a response to increased use, indicating a shift towards more sustainable practices, which can help mitigate some negative impacts on Earth.
D. Pollution from mining increases - This statement directly shows a negative impact on Earth, as increased mining activity often leads to higher levels of pollution and environmental degradation.
In summary, A, D, and to an extent B illustrate the direct or indirect negative impacts of increased copper use on Earth, while C reflects a positive behavioral change in response to the situation.