-__________ Moves Food Down the Esophagus and Through a __________

question 18

Short Answer

-__________ moves food down the esophagus and through a __________ (a ring of muscle that can close off an opening) into the stomach.

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Definitions:

Reaction Range

The potential variability in the expression of a trait determined by genetic and environmental factors.

IQ Score

A numerical value derived from standardized tests designed to assess human intelligence and cognitive abilities.

Environmental Factors

External elements including climate, geography, natural resources, and cultural elements that affect living organisms and human health.

Heritability

The proportion of observable differences in a trait among individuals within a population that are due to genetic differences.