This is the smallest to largest in the organization of organisms: atom- molecule-cell-tissue-organ-organ system-organism. Tissue is just below organs.
Answer:
Planet A: Mars
Planet B: Earth
<em>Explanation</em>:
I got it right on Edge 2020, your welcome :)
They all have different compositions of protons, neutrons, and electrons. This causes variety and makes atoms different so they can make up different substances
