Answer: skull size of each species
Over time, it is the size of the skull particulary that of the jaw bones, that can help determine the evolutionary relationship of two hominid species. It was believed that the jaws of hominids change as time passes by because the size of the brains changes too.
Bacteria: are single-celled microscopic organisms that are characterized by the presence of incipient nucleus and few membrane-less cell organelles.
Fungi: are eukaryotes that are characterized by the presence of chitin in the cell wall.
Cell Type: All bacteria are prokaryotes. All fungi are eukaryotes.
The cell theory of course had an important impact on later scientific discoveries as many different hypothesis and scientific discoveries were derived and concluded with the help of basics from this theory.
A hypothesis is an expectation of what you are going to investigate. So B and D are canceled C has nothing to do with climate So the only remaining answer is A
