Consider the generalized cladogram of fish. A cladogram is shown. Part A has bones and jaws.

Osteichthyes is a group of fish that have the derived characteristics of jaws and true bones. Which letter corresponds to where Osteichthyes belongs on the cladogram?
A
B
C
D

This is a new idea, more effective device or process.this an be viewed as the application of better solutions that meet new requirements, inarticulated needs, or existing market needs. what's the term?

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.

Why are common names a problem for scientist?