Answer:
Behavioral Perspective
Explanation:
The fact that "small changes are introduced in the child's environment" can be taken as a good example of behavioral perspective since the ones that work with this idea consider that evironment has an important influence in behavior. They have the conception that when interacting with a given environment an individual can develop certain attitudes and responses.
Oxidized atherosclerosis is taken up by cells on the inner lining of the blood vessels and contributes to the formation of plaque.
A poisonous snake of North America is the Rattlesnake... I'm not sure if it's one of only 2, but it is one.