What is true about most higher-grade metallic ores? (1 point)

Question

• They are usually found deep below Earth's surface more than 1,000 ft underground.
• Most of them can be extracted without requiring drilling.
• They are usually found very close to Earth's surface less than 1,000 ft underground.
• Most of them can be extracted using the placer method.

Answer 1

• They are usually found very close to Earth's surface less than 1,000 ft underground.