Structures on different species that share a common design because they were inherited from a common ancestor are called __________
Fill in the blank(s) with the appropriate word(s)
Answer: homologous structure
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A squirrel is born and raised in captivity. Once released into the wild, it immediately begins to bury
nuts. This is an example of: a. direct fitness. b. learning. c. proximate causes. d. ultimate causes. e. habituation
The general structural and functional differences between a nerve and smooth muscle cell within an individual are a result of
A. the relative amounts of certain proteins between muscle and nerve cells. B. the proteome (proteins in a cell) that differ between muscle and nerve cells. C. the proteome and the relative amounts of certain proteins that differ between muscle and nerve cells. D. the genome (DNA in a cell) being different between muscle and nerve cells. E. the genome and the relative amounts of certain proteins that differ between muscle and nerve cells.
__________ refers to nutrient enrichment of any ecosystem that is otherwise low in nutrients. Fill in the blank(s) with the appropriate word(s)
The open area or central space in the GI tract is called the ________
Fill in the blank(s) with the appropriate word(s)