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how to do questions 2-4

2. Cell, Stem Cell, Tissue, Organs, Organ System, Organism
3. Cardiac Muscle Cell, Stem Cell, Cardiac Muscle Tissue, Circulatory System, Heart
4. Bone Cell, Stem Cell, Connective Tissue, Skeletal System, Bone

Notice how there's a certain noticeable pattern to the complexity of the systems and organs.

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.