What is an example of a voucher?

few examples of vouchers include bill receipts, cash memos, pay-in-slips, checks, an invoice, a debit or credit note.

Explanation:

option a and d is the correct answer

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unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.