Question - How many salts does the graph present? My question- are the salts the different colored lines??

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

What can be found in the ionosphere

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?