ancestral

definition: 
Of, belonging to, or inherited from an ancestor or ancestors:
sentence: 
Although freshwater is the ancestral habitat for larval mosquitoes, multiple species independently evolved the ability to survive in saltwater.
The unique estuarine has been the ancestral home for nearly 150 species of birds, many of which are migratory.
difficulty: 
easy
toefl frequency: 
2
toefl classification: