Question

add commas, semicolons, or colons if needed. otherwise, submit the text without any additional punctuation. unfortunately, most people are unaware of the contributions of female scientists such as ida noddack, a german chemist cecilia payne - gaposchkin, an american astronomer and muriel wheldale onslow, a british biochemist.

Explanation:

The sentence lists multiple female scientists. In a list of three or more items, commas are used to separate the items. Also, when using "such as" to introduce examples, a comma is not needed after it in this context. However, for the list of names (which are examples), commas are used to separate each name - description pair. And a comma is used before "and" when listing the last item in a series (though this is a style choice, in many writing guides, it's acceptable).

Answer:

Unfortunately, most people are unaware of the contributions of female scientists such as Ida Noddack, a German chemist, Cecilia Payne - Gaposchkin, an American astronomer, and Muriel Wheldale Onslow, a British biochemist.