What are echinads?

Do spiders eat dragonflies? What kind of behavior consists of complex interactions within within groups and is seen in humans as well as ants and bees? What kind of worms live in nuts? What color are termites? Are pray mantis friendly? What is the genus and species of a rat? Are neon spiders dangerous? Where did stick insects origionaly come from? Do calipiters bite? What acid is found in an ant sting? What are small think black worms that can hang on thread like a spider? Will octopus be extinct 20 years from now? What does it mean to find a crayfish in your backyard when you are not very close to water? What are sea urchin spikes called? Where do centipedes live? What is a collar cell's function in a sponge? How much does a liter of compost weigh? Can you find a Luna moth caterpillar in Portland Oregon? What do all beetles like to eat? Is it safe to run an evaporative cooler with a wasp nest inside?