The graph below shows some uses of the natural resource petroleum. The graph also shows how U. S. petroleum production is expected to change over time. Petroleum graph What does the trend line show about the amount of U. S. petroleum production from 1970 to 2030? n
The subject is actually science

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Which is the layer underground where all empty spaces are filled with a combination of air and water ?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

What is the mass of 8 moles of sodium atoms