Which Factor, More Than Any Other, Modifies the Evolutionary Tracks

question 109

Multiple Choice

Which factor, more than any other, modifies the evolutionary tracks of stars in binary combinations compared with their single-star counterparts?

• A) tidal distortion of the shapes of the stars
• B) reduction of the quantum mechanical limitation on continued shrinking of one star by the gravitational field of the second star
• C) mass exchange between the stars
• D) radiation from one star heating the surface of the second star

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Definitions:

Tapeworm

Parasitic flatworms that live in the digestive tract of vertebrates, absorbing nutrients from the host's meals.

Scolex

The head or attachment organ of a tapeworm, equipped with suckers or hooks for attaching to the host's intestine.

Proglottid

One of the segments that make up the body of a tapeworm, each capable of producing eggs and developing into a new organism.

Flame Cells

Specialized excretory cells found in some flatworms, functioning in the removal of waste products from the body.