Classify as man-made or natural extinction: Pollution Natural extinction
Man-made
Neither
Both

Both because things like car emissions are man made but wild forest fires are natural but the smoke causes pollution as well

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.