Write a general description of the arachnids.

In general, in spiders, the body is divided into sections – the cephalothorax and abdomen. On the cephalothorax they have four legs and two limbs are chelicerae and leg-tentacles, with which they cut food. On the lower abdomen, spiders have three warts that produce a cobweb. They also have poor eyesight, but the organs of touch are well developed. There are organs that react to chemicals. All arachnids have normal eyes.
Spiders breathe in the trachea and lungs (some sacs). In ticks through the skin. Scorpions have lungs. The blood has no color (personally checked). All arachnids are predators. All of them can be dangerous to humans, but not many, like tarantulas, are very cute and soft.