According to the USGS, as of 2018, the total amount of copper contained in world reserves was approximately 790 million tons.
According to the USGS, how much total copper was contained in world reserves as of 2018?(1 point)
Responses
300 million tons
300 million tons
790 millions tons
790 millions tons
5 million tons
5 million tons
45 million tons
45 million tons
1 answer
1 answer