insects
INSECTS
Insects make up the greatest percentage of the worlds organisms that are classified in each group. With 84 percent of the worlds organisms still to be defined insects are. Under classification "Species" is the group most commonly used.
Animals that have no backbone are part of the group known as invertebrates. This group includes organisms such as insects, worms, snails, and jellyfish. Invertebrates make up the majority of animal species on Earth.
If insects count, then insects. But if they don't count, I'm not sure but I'm guessing....... birds??
In the second paragraph, the center of focus is on birds as the group of organisms that exhibit impressive diversity and adaptation for flight.
Organisms with a backbone are called vertebrates. Vertebrates are characterized by having a spinal column made up of individual vertebrae. This group includes mammals, birds, reptiles, amphibians, and fish. Vertebrates are part of the phylum Chordata, which also includes some invertebrate organisms like tunicates and lancelets.
Homo erectus were animals, just as we are. Animals are the group of organisms descended from the first self-motivating heterotroph multicellular eukaryotic organisms. This includes insects, fish, molluscs, snails, reptiles, birds, and mammals, including modern humans and their primate precursors, such as Homo erectus.
Insects are the most diverse group of organisms on Earth, with estimates of up to 10 million different species. They make up a significant portion of all known species, outnumbering any other group of organisms.
a species
A flying insect is more closely related to a bird than to a worm because both insects and birds are part of the phylum Ecdysozoa, which includes arthropods and vertebrates, while worms belong to the phylum Annelida. Insects and birds share a more recent common ancestor in the evolutionary tree, specifically within the clade of bilaterians. Additionally, both insects and birds are part of the larger group of organisms that exhibit bilateral symmetry and have similar developmental patterns, unlike worms which have distinct features and evolutionary paths.
Wings