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:
1. subject: Child predicate: laughed
2. subject: child predicate: laughed with joy
Explanation:
Answer:
The availability of services, in terms of quantity, type, consumers of those services and location of their providers.
The opportunities for the workforce to find suitable employers and jobs that match their qualifications, skills and, ideally, personal preference.
The different aspects to a well-balanced life, ranging from being able to access quality health services to accessing healthy eating and regular exercise.
Explanation:
The glue is non-toxic. You still can't eat it, but at least it's non-toxic.
