After listening to freddy's speech, caroline tells him that she liked it very much because it was really good and interesting, and that he chose an important topic to speak on. this is an example of:

Among the following environmental factors, which does not have a long-term impact on the composition of a region's soil? a. kinds of crops grown b. types of fungi present c. topography of the landscape d. variety of species of mammals e. number of freezes occurring annually