A 1 Kg Soil Sample Has 2 Cmol_c of Al³⁺

question 7

Multiple Choice

A 1 kg soil sample has 2 cmol_c of Al³⁺ on the exchange complex.Addition of which of the following would most effectively replace about half of this Al?

• A)1 cmol_c K⁺
• B)10 cmol_c OH^-
• C)4 cmol_c Ca²⁺
• D)4 cmol_c Na⁺
• E)2 cmol_c Na⁺

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Definitions:

Descent with Modification

A core principle of evolutionary biology indicating that species change over time, giving rise to new species, while sharing a common ancestor.

Darwin's Idea

Refers to the theory of evolution by natural selection, proposed by Charles Darwin, which describes how species evolve over time through changes in heritable traits.

Shared Similarities

Characteristics or traits that are common across different entities, indicating a degree of relatedness or evolutionary history.

Georges Cuvier

A French naturalist and zoologist known for establishing extinction as a fact and founding the field of comparative anatomy.