An adult eats food whose nutritional energy totals approximately 2100 Cal Cal per day. The adult burns 1800 Cal C a l per day. How much excess nutritional energy, in kilojoules, does the adult consume per day?

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?