Principal of separation of powers applied differently in presidential and parliamentary systems

~Q1) How is the principal of separation of powers applied differently in presidential and parliamentary systems? ( supply at least 3specific differences) 2 from the legislative branch and one from the executive branch.
~Q2) what is the relationship between the legislative branch of government and the process of the judicial review (give at least one example to support analysis )
~Q3)what is the current role for Canada in the UN peacekeeping operation in Mali ?is this operation an example of liberal internationalism or classic realism as these term relate to international relation theory