What is 736.9x10^5 in standard form

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

Avariable that is not being directly tested during an experiment should be

Chemistry worksheet - i am not sure what they are asking for exactly?