# data[].attributes.body
•Arachnids are part of the arthropods group, but they have some characteristics that distinguish them from other arthropods, which are: some don’t have antennae, Claws and wings. Instead they have: mandible and a structure that help them to eat  easily.

•The types of Arachnids are: Spiders, Acari, Scorpio and Harvestmen.

•There are more than 102 000 species in the arachnids group.

• They are Oviparous animals, which means that they leave eggs.

4

# data[].attributes.body
• The Crustaceans have an exoskeleton made of  calcium.

• They have two head compound eyes, antennae  and mouthparts.

• The types of crustaceans are: lobsters, crayfish, shrimp and krill.

• Some interesting things that only crustaceans have are: legs that/which are jointed. They have an advanced nervous system and a group of neurons that help the organism.

4

# data[].attributes.body
• There are 10 thousand species of Cnidarians.

• They are mainly aquatic animals in the Cnidarians, that why they live in the ocean.

• They have an Internal cavity mouth, they don’t have larva stage instead they have planktonic stage.

• The reproduction in Cnidarians is asexual or sexual

4

# data[].attributes.body
• They have an un segmented and symmetrical body (bilateral)

• Their body is divided into three regions, a head a visceral mass and (a) ventral foot.

• They are invertebrate animals.

• They feed them selves by a rasping younger named radula, that have teeth.

4

# data[].attributes.body
• Worms are symmetrical.

• Worms are good braking down organic matter.

• Worms leave around 2.6 years.

• They don’t have circulatory and respiratory system.

4

# data[].attributes.body
• Echinoderms only live underwater, which means that they live in the ocean.

• Their Skeleton is made of calcium.

• The Main gritos of echinoderms are: Asteroidea, Ophiuroidea, Holothuroidea, Echinoidea and Crinoidea.

• Echinoderms have asexual reproduction.

• Echinoderms eat plankton and marine plants.

• Echinoderms don’t have a brain they are marine animals that don’t have a brain.

6

# data[].attributes.body
https://www.quora.com/How-do-echinoderms-eat-How-do-they-process-food

https://www.enchantedlearning.com/subjects/invertebrates/crustacean/