Which One of the Following Materials Has the Maximum, Sustainable

question 38

Multiple Choice

Which one of the following materials has the maximum, sustainable, slope angle, as determined by the angle of repose?

• A)moist, clay- rich shale layers
• B)dry silt
• C)moist, sandy soil with a clay- rich matrix
• D)dry sand

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Definitions:

Hybridization

(1) Interbreeding between members of two different taxa. (2) Interbreeding between genetically dissimilar parents. (3) In molecular biology, complementary base pairing between nucleic acid (DNA or RNA) strands from different sources.

Plant Evolution

The study of the processes that led to the diversity of the plant kingdom, from the earliest forms of life to the vast array of plants we see today.

Mechanical Isolation

A prezygotic reproductive isolating mechanism in which fusion of the gametes of two species is prevented by morphological or anatomical differences.

Sexual Isolation

A prezygotic barrier where different species are unable to mate successfully due to behavioral, physiological, or environmental differences.