what types of phenomenon make up pseudoscience how do we know it belongs in this category why do experiments need a control and a variable in them

I have tow quotations I need short answers three sentence at lees for each quotation
What types of phenomenon make up pseudoscience? How do we know it belongs in this category?
Why do experiments need a control and a variable in them?
 
Do you need a similar assignment done for you from scratch? We have qualified writers to help you. We assure you an A+ quality paper that is free from plagiarism. Order now for an Amazing Discount!Use Discount Code “Newclient” for a 15% Discount!NB: We do not resell papers. Upon ordering, we do an original paper exclusively for you.