What's worse, excessive packaging causes the waste of resources and serious environment pollution.

更糟的是，过度包装造成资源浪费和严重的环境污染。

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But the excessive development and unclean and inefficient utilization of coal resources have brought not only huge waste of coal, but also serious deterioration of ecological environment.

但煤炭资源的过量开发和非高效非洁净利用，不仅造成了煤炭资源的大量浪费，而且导致了生态环境的严重恶化。

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There are mainly two causes of the environmental problems: the excessive use of natural resources and massive discharges of polluted waste in the course of production.

环境问题有两方面的原因：对自然资源的过度开采和生产过程中废弃物大量的排放。

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