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Microscopic photo taken by Opportunity showing a gray hematite concretion, indicative of the past pr
Calibrated cups, spoons, droppers, and syringes are often used to administer liquid medications.
Water Vapor and Liquid Water
The three states of matter: solid, liquid, and gas.
Observed global land and ocean surface temperature anomalies since 1850
Satellite data on primary productivity in the equatorial Pacific Ocean