For Plato users the answer is A. "to make them less expensive to build."
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Answer:
Technology has deeply affected the global economy and its usage has been linked to marketplace transformation, improved living standards and more robust international trade. ... Technological advances have significantly improved operations and lowered the cost of doing business.
Explanation:
Some how you can type this in English
The London-Smog occurs mostly in winter and is a mix of gaseous and solid aerosoles as well as natural fog. The Los-Angeles smog is dry, and formed mostly during sunny and hot weather conditions.
