The process by which a species becomes fitted to its environment, it is the result of natural selection's acting upon heritable variation over several generations
A. Evolution
B. Adaptation
C. Natural Selection

Evolution, it mentioned over several generations.

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.