103 Invertebrate Glossary
In 1960s Robert Whittaker proposed grouping life into a 5
In 1990s Carl Woese proposed grouping life into a 3 Domain
One of the 3 Domains (cells have a true nucleus). Contains
Smart Science Extra Exploration
The Keystone School Teacher - AP Biology
Apr 19, 2017 2:47:53 PM
Any instructor comments appear in a box below each answer.
Choose an animal. Simple ones like worms or starfis
1 out of 1 points
An adaptation, in an evolutionary sense, is a structure or function that is
the result of natural selection and that does not merely respond to some
environmental change, such as adapting by finding shelter when it rains.
Extinction is a common occurrence in the fossil record.
Many of the fossils unearthed are from species that no longer
exist as modern living species, or extant species.
Mass extinctions are defined by a loss of 90 percent of the biota
from the fossil re