Which of These Is a Niche That Cambrian Animals Occupied―that,as

question 21

Multiple Choice

Which of these is a niche that Cambrian animals occupied―that,as far as we know,their predecessors did not?

• A) grazing on microbial mats
• B) feeding on organic debris
• C) absorbing nutrients across membranes
• D) predation while actively swimming
• E) None of the above.

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Definitions:

Negotiable Instruments

Financial instruments that are transferable from one party to another, typically including checks, promissory notes, and bills of exchange.

Checks

Checks are written, dated, and signed instruments that direct a bank to pay a specific amount of money from the writer's account to the person or entity in whose name the check has been issued.

Drafts

Written orders by one party (the drawer) to another (the drawee) to pay a specific amount of money to a third party (the payee) on demand or at a specified future date.

Promissory Notes

Written and signed agreements in which one party promises to pay another a specified sum of money either on demand or at a future date.