With the links below, please define the following concepts using an example such as Darwin's finches, the Lemurs of Madagascar, flowering plants of Hawaii etc).
1) common ancestor
2) adaptive radiation
3) speciation
4) environmental niche
Recommended resources:
Adaptive Radiation: Darwin's Finches
https://www.pbs.org/wgbh/evolution/library/01/6/l_016_02.html
Article: Lemurs in Madagascar-Then
https://www.amnh.org/explore/science-bulletins/bio/documentaries/lemurs-of-madagascar/article-lemurs-in-madagascar-then/
Adaptive Radiation
https://ohia.org/ohia/roadshows/sky/seed/