51% Of the solar radiation is absorbed at surface !!
Answer:
1. Oil had many functional uses such as cooking, heating, and lighting. For example, oil lamps used oil and were a great source of lighting during that time.
2. Crude is another word for unprocessed, or unfiltered oil (oil that is not ready for use).
3. Refineries were used to process or "filter" the oil to make it useful without emitting more dangerous gases to people using oil.
Even today, the Silk Road holds economic and cultural significance for many. It is now recognized as a UNESCO World Heritage Site, while the United Nations World Tourism Organization has developed the route as a way of ‘fostering peace and understanding’. Having visited a number of countries the Silk Road passes through, I can definitely say that taking a trip along this route is incredible and well worth the long distance travelled.
I don’t know if this is right.. but I love your pfp and I hope this helps!