Dr. Liu conducted an experiment showing that manipulated levels of frustration increased levels of aggression in kids. Dr. Liu observed the same basic results for (a) kids of different ages, (b) girls versus boys, and (c) kids of three different ethnic backgrounds. What do points a, b, and c mean? A) it supports the internal validity of her findings
B) it supports the external validity of her findings
C) it supports both the internal and the external validity of her findings

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

Taq polymerase is an enzyme isolated from the organism thermophilus aquaticus. this organism has been found living in the hot springs of yellowstone national park. this enzyme is used to copy human dna from crime scenes. most reactions are performed at ranges similar to those of the human body; however, what considerations should be made for optimum use of this enzyme? view available hint(s)taq polymerase is an enzyme isolated from the organism thermophilus aquaticus. this organism has been found living in the hot springs of yellowstone national park. this enzyme is used to copy human dna from crime scenes. most reactions are performed at ranges similar to those of the human body; however, what considerations should be made for optimum use of this enzyme? the enzyme will not work on human dna. nothing should be altered. the ph should be decreased. the temperature should be raised.

Diagram of the evolution of land plants?