Bandura's social cognitive theory of personality stresses the observation of adult behaviors as well as the concept of in the development of a child's personality

Self-efficacy in the development of a child's personality is the correct answer. 

The reason for this is that Bandura strongly emphasized the aspect of self-efficacy in children (how good do you believe you are at a certain thing) as an important point that needs to be taken into consideration in developing children. 

The answer is ozone layer.

We can use solar powered cars or ride bikes instead of cars that burn fossil fuels