Which of the following statements about types of chemical reactions is true? 1. The opposite of a decomposition reaction is a synthesis reaction
2. The opposite of a synthesis reaction is a displacement reaction
3. The opposite of a displacement reaction is a replacement reaction
4. The opposite of a combustion reaction is a decomposition reaction

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

**40** points asapessay questions (10 points possible) clear image of next, create your own scenario. it can be one of your own real experiences or one you make up. use imagery in your writing to give your instructor a the setting and an action taking pace in your writing explain the structure and functions of the skin at work in your scenario. !

What is the value of keq for the reaction expressed in scientific notation