Answer Aristotle divided animals into those with blood and those without. Carl Linnaeus created the first hierarchical biological classification for animals in 1758 with his Systema Naturae, which Jean-Baptiste Lamarck expanded into 14 phyla by 1809. In 1874, Ernst Haeckel divided the animal kingdom into the multicellular Metazoa (now synonymous with Animalia) and the Protozoa, single-celled organisms no longer considered animals. In modern times, the biological classification of animals relies on advanced techniques, such as molecular phylogenetics, which are effective at demonstrating the evolutionary relationships between animal taxa.
Animals have several characteristics that set them apart from other living things. Animals are eukaryotic and multicellular, unlike bacteria, which are prokaryotic, and unlike protists, which are eukaryotic but unicellular. Unlike plants and algae, which produce their own nutrients animals are heterotrophic, feeding on organic material and digesting it internally. With very few exceptions, animals breathe oxygen and respire aerobically. All animals are motile (able to spontaneously move their bodies) during at least part of their life cycle, but some animals, such as sponges, corals, mussels, and barnacles, later become sessile. The blastula is a stage in embryonic development that is unique to most animals, allowing cells to be differentiated into specialised tissues and organs.
Explanation:
Answer:
okay so denotation is the textbook definition. like if u were to look in a dictionary, the definition of the word is the denotation. The conotation is the negative or positive 'vibe" you get when u hear the word. For example....smart has a positive connotation, but nerdy has a negative connotation, even though they have the same denotation (defintion)
Explanation:
The answer is a Thesaurus because if you are looking for words that are similar to "cliche" you look for those words in a thesaurus. I'm glad I could help bestie! loves ya
-Abby XOXO
Answer:
The answer is the 2nd one.
Explanation:
Because she was having a lot of trouble deciding whether to tell him her american age, or her chinese age.
Answer:
I am very stressed about college entrance exams. It's unbelievable!
Explanation:
