The Nat Sci CLEP gets 100 level credit. Environment & Humanity DSST gets 200 level credit. You cannot have more than 18 credits of any one subject in the area of study, but you have 20 math credits there. You may be able to switch the Nat Sci CLEP to Gen Ed and the Enviro Science and Earth Science courses to the Area of Study assuming the latter two aren't evaluated as 100 level courses.
There are some other ways you can do like switch Calculus I into the Nat Sci/Math Gen Ed and either Earth or Enviro science out. I'm not sure how C++ evaluates- probably to 200 level.
It really will be determined by how the Earth and Enviro Science courses are evaluated. Then you can look and switching some things around and then determine any additional exams to be taken.
There are some other ways you can do like switch Calculus I into the Nat Sci/Math Gen Ed and either Earth or Enviro science out. I'm not sure how C++ evaluates- probably to 200 level.
It really will be determined by how the Earth and Enviro Science courses are evaluated. Then you can look and switching some things around and then determine any additional exams to be taken.