Which of the following units can be used to measure the mass of a grain of salt? a. milliliters b. milliseconds c. millimeters d. milligrams

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.