elect all the correct answers. The graph gives information on greenhouse gas (GHG) emissions from industries. Which questions would help clarify the evidence from this graph? What caused a drop in GHG emissions around 2009? Did GHG emissions cause the melting of Arctic glaciers? How much methane was emitted by homes between 1990 and 2000? Does industrial equipment release gases other than greenhouse gases? Which types of industries were included in the study?

1. an enzyme is considered a(n) because it speeds up a chemical reaction without being used up.2. in a catalyzed reaction, a reactant is often called a(n) . an enzyme is specific because the shape of its matches only particular reactants.4. an enzyme speeds up reactions by lowering the . the between an active site and its substrate often strains bonds and the reaction proceed.6. a( , which is often a vitamin, binds to an enzyme and plays a role in catalysis.7. high temperatures or changes in ph can an enzyme, causing it to lose its shape and biological activity.