The wavelength idea of the wave-mechanical model refers to a) the wave nature of electrons b) the wave nature of protons c) the wave nature of atoms d) the wave nature of light only

The correct answer would be the wave nature of electrons

falling water hydro = water .. spectcular places these plants are

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation