Chapter 18 TB Vocab

Question 1

ecological opportunity

Answer 1

• potential for invasion of an ecological community by other species, owing to resources that are not fully used by resident species

Question 2

key adaptations

Answer 2

• an adaptation that provides the basis for using a new substantially different habitat or resource

Question 3

adaptive zone

Answer 3

• a set of similar ecological niches occupied by a group of usually related species, often constituting a higher taxon

Question 4

species selection

Answer 4

• form of group selection in which species with different characteristics increase (by speciation) or decrease (by extinction) in number at different rates because of a difference in their characteristics