Which labels belong in the areas marked X, Y, and Z? X: ray bounces off a boundary and maintains constant speed Y: ray changes direction Z: ray passes through a boundary and changes speed X: ray bounces off a boundary and changes speed Y: ray changes direction Z: ray passes through a boundary and maintains constant speed X: ray bounces off a boundary and changes direction Y: ray maintains constant speed Z: ray passes through a boundary and does not change direction

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).

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

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures