Since the 1990s , trade has grown very fast driven by a mix of technological change and policy reforms . With the exception of 2009 trade growth has still remained positive and much bigger than economic growth . This underlined clearly that trade is effective engine for growth.
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The answer is d I took the test
Answer:
It is this effect that makes solar panels useful, as it is how the cells within the panel convert sunlight to electrical energy.
Explanation:
