The reason is that something changed that caused them to be unsuccessful in their environment.
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Answer:
During the 20th century, a belief called behaviorism was popular. Behaviorism was a major change from previous theoretical perspectives, rejecting the emphasis on both the conscious and unconscious mind.
Explanation:
The answer for this question is C
Answer:
B
Explanation:
Stratosphere,absorbs rays of damaging ultraviolet light from the sun
Answer:
Skin acts a defensive and protective layer. It protects the internal body from pathogens, which are disease causing bacteria. The skin can fend off bacteria, particles, foreign bodies, etc.
Explanation: