The average global temperature has during the 20th century.

remained the same

increased every year

risen some years and fallen other years, but has increased overall

risen some years and fallen other years, but decreased overall

(i think it is the 3rd one)

How do oceanographers measure the salinity of ocean water?

Acompany produces items in small batches. the machinery needs to warm up before the items can be produced. the scatterplot shows the time needed to produce batches of different numbers of items. based on the line of best fit, which of these statements is true?

What causes heat transfer in fluids