Which layer of the alimentary canal is constructed from either stratified squamous or simple columnar epithelium? a) muscularis externab) mucosac) submucosad) serosa

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

Suppose you could go back in time to interview henri becquerel on the day he discovered radioactivity. from his perspective, write an account of the discovery.