Certain aspects and embodiments of the present invention are directed to systems and methods for monitoring and analyzing the language environment and the development of a key child. An impedance control circuit controls impedance of the termination circuit in accordance with impedance of an external reference resistor, so as to have the same or substantially the same impedance as that of the external reference resistor. This coating composition is applied to the chilled surface, and a portion of the coating composition is allowed to freeze onto the surface. Still further provided by the invention are methods for producing soybean plants by crossing the soybean variety A1036218 with itself or another soybean variety and plants produced by such methods.