Explain how you could separe a mixture of sand and salt

Several processes form metal ore. match each process to its description. volcanic activity weathering hydrothermal energy rocks break down as they interact with air and water. arrowright density differences and other factors cause metals to concentrate in igneous rocks. arrowright seawater heats up from contact with hot rock, and metals dissolve in it. the water rises and contacts cooler water, causing metal ores to settle on the ocean floor. arrowright

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground