Answer:
sun to plants, plants to animals, animals to waste I believe
A bacteria basically, smaller than a eukaryotic cell, can't be animal or plant cell and is less complex
by the law of natural selection, daddy charles darwin stated that overpopulation could result in famine and wars, and death would accelerates across nations, so overpopulation is a cause for this because of too many organisms but not enough food, which declined growth rate.
Water, dirt, pebbles/gravel, clouds, temperature, sunlight. Hope this helps!
