Answer:
the nut is the producer, the squirrel is the primary consumer.
the fish is the primary consumer, the bear is the secondary consumer
the leaf is the producer, the caterpillar is the primary consumer
the worm is the primary consumer, the bird is the secondary consumer.
Explanation:
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Relate from plant cell to human
We breath oxygen because it is needed to burn fuel [ sugars and fatty acids] in our cells to produce energy. Oxygen is also brought into the lungs via breathing; where it is transported by red blood cells to the entire body to be used to produce energy. The food we eat gives us protein, sugars, vitamins etc. for energy
The answer is from another male zygote or his male father.