Lithium is found to occur in the ashes of plants such as .......... .

Explanation

To answer the question "Lithium is found to occur in the ashes of plants such as ..........", we can follow these steps:

### Step 1: Identify the Plant
Lithium is known to be present in the ashes of certain plants. One of the most notable plants that contains lithium in its ashes is tobacco.

### Step 2: Provide Supporting Information
Tobacco leaves contain approximately 500 parts per million (ppm) of lithium oxide (Li2O) in their ashes. This means that when tobacco is burned, the resulting ash contains a measurable amount of lithium.

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