What is the minimum temperature for cooking hamburgers

How does cloud cover affect how much infrared light is reflected back to the ground?

Mr. mann's science students were experimenting with speed. they set up a 1 meter (100 cm) track. the students used balls instead of cars. the balls were different sizes and made of different materials. four at a time, students rolled balls around the track to see which had the fastest and slowest speeds. some of their data are shown in the table. which ball will take the longest to complete one lap around the track?

What are objects called that have value in and of themselves as well as value as a means of exchange? custom commodity money currency simple money