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?

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

Can someone me with 3 and 4 plz. this is for masteries test.

Which three statements represent the benefits of performing experiments using computer simulations?