Why is a starfish an echinoderm?

Why do prawns live in the sea? Can a beetle crawl? How big do writing spiders get.? Does dust mites stays forever in humans body? What are examples of INaNIMATE nouns in sentences? Gas exchange in many mollusks occurs between the surrounding environment and highly folded tissues called? How do painted lady butterflies defend themselves? When measuring the length of an earthworm which graduations would allow for the most accurate measurement? What is a black and gold garden spider? How can cut flowers be made to last longer in a vase? What flying insect has black head with clear wings and brown body with stinger? Why does camouflage help insects? What eats grasshopers? How doyou call these organisms that eat rice plants? Does a caterpillar's fuzz give it a sense of touch taste sight or smell? What are the stages of a caterpillar? Do people swallow in there sleep? Do silkworms live in dirt? What solutions use for kill mosquito coming from toilet tank? What is a meatophor?