An Artifact Is Discovered at a Certain Site

question 155

Multiple Choice

An artifact is discovered at a certain site. If it has 78% of the carbon-14 it originally contained, what is the approximate age of the artifact to the nearest year? Carbon-14 decays at the rate of 0.0125% annually. Round to
The nearest year, if necessary.

• A) 6240 years
• B) 1760 years
• C) 863 years
• D) 1988 years

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Definitions:

Axopods

Long, filamentous, cytoplasmic projections characteristic of actinopods.

Silica Shells

Rigid, protective, outer coverings made of silica found in certain algae and microscopic aquatic organisms, such as diatoms.

Algal Endosymbionts

Algae living within the cells or body cavities of another organism in a mutualistic relationship, contributing to the host's nutrition, especially in corals and some marine animals.

Rhizarians

A group of mostly unicellular eukaryotes characterized by their amoeba-like movement mechanism, often through pseudopods.