Answer: 1) Whatever you do and 2) what to major in at college.
Explanation: A noun clause is a group of words in a sentence, that acts like a noun, which means they represent the subject of the sentence or an object. In the first sentence the noun clause is "whatever you do" we can see that it acts like a noun, and it is also a dependant clause of the sentence. In the second sentence the noun clause is "what to major in at college" it acts like the direct object of the sentence (it answers to the question "what couldn't Janice decide?).
Something that makes me happy are sunsets. Sunsets are gorgeous, and make the earth feel so beautiful. The colors warm my heart. It’s almost impossible to watch a sunset and not dream.