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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.

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Are head lice the same species as crabs and if so why do they have different names?

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.


Why does the head of a fetus develop faster than the body?

Because the brain has to grow.


Every mollusk has a head body and what?

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.


How are head hairs different from other hairs on the human body?

BALLS


How are head hairs different from other hair on the human body?

BALLS


Can a brain develop somewhere besides the head?

Some dinosaurs had three different brains. They had one in their head with the other two spaced along their back bones.


What is a whaleduck?

A whaleduck is the combo of a whales body and a duck head. It is a very rare species and likes to eat cheese


What are the body parts of a clam?

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


What is the thing on top of a roosters head called?

A comb. It's called a comb, and it's found on many different species (and sexes) of fowl.


Which invertebrate animals allways have three body segments a head a thorax and an abdomen?

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.


Why do you look different in space?

When you are in space, the fluid in your body is pulled towards your head to make you look different.


What duck has green head and black body?

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.