Question

select the linking verb and the predicate noun or predicate adjective. dust devils and tornadoes, which look nearly the same, materialize under different weather conditions.

Explanation:

In the given sentence, "look" is a linking verb as it connects the subject "Dust devils and tornadoes" to the description "nearly the same". There is no predicate - noun, and "nearly the same" is a predicate - adjective phrase modifying the subject.

Answer:

Linking verb: look; Predicate adjective: nearly the same