a scientist found that a sample of matter contains three types of atoms. the sample can be any of the following except a/an

Ppcc assigned a story board on eg. ppcc. edu about a post-apocalyptic world called the books of wisdom. i was wondering if anyone had any advice on how to do well. also is there a way to change you name?

Give an example of the type and scale of economic activity for a traditional economy.

Which is these sentences can be deleted from the first paragraph sentence 4 sentence 2 sentence 5 sentence 3