The statement that is true for sentence that have more than one clause is that, there can be one negative word per clause. If a sentence has more than two clauses, then each clause can have one negative word. But double negatives in one clause is grammatically wrong.
Answer:
If you don't have a lot of experience to include in your resume, you should mention your skills and what your good at for eg. 'I am good at taking responsibility' 'I work well with others and have always loved to help people' etc. You can include hobbies, languages you know, certificates you have received and achievements even if you don't have any actual work experience, everyone starts somewhere
Magma is when it's underground, and after the volcano has erupted you then call it lava.