Which Was Not an Incorrect Assumption or Estimated Value Made

question 20

Multiple Choice

Which was not an incorrect assumption or estimated value made by geology professor John Joly to determine the 80 to 100 million year age of Earth based on the salinity of the oceans?

• A) The salt content of river water through time.
• B) The volume of the ocean.
• C) The amount of ancient rock salt.
• D) The salinity of seawater.

---

Definitions:

Pteridophytes

Non-flowering plants that reproduce and disperse via spores, including ferns, horsetails, and clubmosses, distinct from seed plants in their lifecycle.

Gametophyte Dominant

Referring to a life cycle stage in certain plants and algae where the gametophyte is the more prominent or long-lived phase, compared to the sporophyte phase.

Windblown Spores

Reproductive particles produced by fungi and some plants that are dispersed by wind to propagate the species.

Fiddleheads

The furled fronds of young ferns eaten as a vegetable, known for their distinctive spiral shape that resembles the scroll of a fiddle.