Some plant are made from arsenic and lead, which are very poisonous to animals and fish.

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The flowering plant is native to Europe and can grow up to ten feet tall if left to grow for years. Although all parts of the plant are poisonous, the shiny black berries are most poisonous. The words bella donna mean pretty woman in English.

Explanation:

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when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.