Some anthropologists believe that the different species of head and body lice developed in response to humans' invention and use of clothing about 50,000 years ago.
Pediculus humanus capitus (head lice), Pediculus humanus corporis (body lice), and Phthirius pubus (crab lice) are the three variants in humans. I believe the difference is that they are different sub-species.
Because the brain has to grow.
Every mollusk has a head, a body, and a foot. The head typically contains sensory organs and a mouth, while the body houses the internal organs. The foot is a muscular structure used for movement and can vary in shape and function among different mollusk species. Additionally, many mollusks have a protective shell made of calcium carbonate.
BALLS
BALLS
Some dinosaurs had three different brains. They had one in their head with the other two spaced along their back bones.
A whaleduck is the combo of a whales body and a duck head. It is a very rare species and likes to eat cheese
The lobster has many parts, they have 4 Antennae, 2 front claws, eyes, Exoskeleton, Compound eyes, mouth, head, 8 legs, the abdomen and there thorax
A comb. It's called a comb, and it's found on many different species (and sexes) of fowl.
Invertebrate animals that always have three body segments—a head, a thorax, and an abdomen—belong to the class Insecta, commonly known as insects. This characteristic body plan is a defining feature of insects, which includes diverse species such as butterflies, beetles, and ants. Other arthropods, like arachnids (spiders) and crustaceans, have different body segment arrangements.
When you are in space, the fluid in your body is pulled towards your head to make you look different.
A male mallard in breeding plumage. There is no wild duck with a green head and a black body. Mallard drakes have the green head, but the body is bascically buff and brown, with white and a blue or lavender speculum patch on the wing, with a dark brown or chestnut colored chest. The bird you saw may be one of many hybrid species, as for example I have seen seen domestic ducks that have bred with mallards to produce many different colors, including basic black birds. In exotic species, male Indian runners and crested cayuga ducks are black with green heads, and are allied to mallards. But no North American species.