4. What did merchants need to trade goods?

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste

6. how are goods and services distributed in a free market system?

Based on the information given and the gauges which process or processes have their alarm light on?