Fossil Stromatolites and Microfossils Are Used as Evidence in Studies

question 68

Multiple Choice

Fossil stromatolites and microfossils are used as evidence in studies of early life on Earth. What is a disadvantage of using these rock formations in these types of studies?

• A) Paleontologists have to dig deep into Earth's crust to find them.
• B) Abiotic processes lead to the formation of stromatolite-like structures or objects that resemble microfossils.
• C) They must be destroyed in order to obtain samples for analysis.
• D) Their analysis requires expensive and inconvenient radioisotope detection.
• E) They are extremely fragile when exposed to air.

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Definitions:

Labour Cost

Labour cost is the total expense incurred from employing labor, including wages, benefits, and taxes, significant in assessing overall production costs or operational expenses.

Practical Standard

A level of performance or an expectation that is realistic and attainable under normal circumstances.

Labour Efficiency Variance

The difference between actual labor hours worked and the standard labor hours expected for the level of production achieved.

Direct Labour Standard

A benchmark for the amount of direct labor time that should be consumed in the production of goods or services, used for costing and efficiency analysis.