A. the distribution of sand on an ocean floor
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pretty sure its A hope this helps!
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The average adult, when resting, inhales and exhales about 7 or 8 liters of air per minute. That totals about 11,000 liters of air per day. Inhaled air is about 20-percent oxygen. Exhaled air is about 15-percent oxygen.
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Answer:The mass of a liquid can be measured using one of these two methods: Method n 1: - Measure the mass of the empty container. - Pour the liquid into the container and measure the new mass. - The mass of liquid is obtained by subtracting the mass of the container to the total mass. hope this makes sense :)
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