Make a 6 to 8 slide PowerPoint presentation based on the differentiation between LEED certification and ISO certification for businesses which addresses the given:
a) Recognize the basis and requirements for each kind of certification.
b) Explain the gap in sustainability practices between the two certifications.
c) Explain the role of each in sustainable business practices.
The presentation should comprise detailed speaker's notes, which become the script of the oral presentation. The slides should comprise a suitable background and additional graphics to highlight main points.