Which theory of plate movement relies on the weight of the subducting crust? A. Slab-push
B. Slab-pull
C. Mantle convection
D. Hot plumes

The correct answer would be B, slab-pull.

Explanation:

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poison levels are being represented and it show how much poison the producer has and how much the consumer has   and damage the organisms in it, particularly in the predators at the end of the chain. this is because accumulating compounds cannot be excreted.