Examlex
________ refers to the difficulty level of the problems that children can solve correctly on an intelligence test.
Coelacanths
Coelacanths are rare and ancient fish known for their lobed fins, which were once thought to be extinct until living specimens were discovered in 1938.
Lungfishes
A group of freshwater fish known for their ability to breathe air using lungs in addition to gills, found in Africa, South America, and Australia.
Tetrapod
A vertebrate animal that has four limbs or limb-like appendages, including amphibians, reptiles, birds, and mammals.
Convergent Evolution
The process where organisms not closely related independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.
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