Half the world's silver in the 16th century was produced in mines at Potosi, now located in what country?

Eurasia is a world leader in the production of

A) natural gas. B) nuclear energy. C) petroleum. D) geothermal energy.

Nearshore productivity is almost always more productive than open ocean productivity. Indicate whether the statement is true or false

What is luster?

a. a mineral's ability to transmit light through itself b. the color of a mineral in powdered form c. an indication that a mineral has double refraction d. the quality of light reflected from a mineral's surface e. the color of a mineral

The collapse of fisheries is most noticeable among the smaller fish that are consumed by larger predatory fish, such as sharks and tuna

a. True b. False Indicate whether the statement is true or false