Atrain travels a distance of 300km in 1 hour, determine the average speed of the train.( )

into the screen

explanation:

the wind is hitting the car into the screen

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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