Is the North American mastodon an autotroph?

No, the North American mastodon is not an autotroph. Autotrophs are organisms that can produce their own food from inorganic molecules, such as carbon dioxide and water. The North American mastodon is a heterotroph, which means that it must obtain its food from other organisms. Mastodons were herbivores and ate a variety of plants, including leaves, twigs, and bark.