How do you know when a grub is dead?

Are snails vertebrates? What does a ladybird spider eat? What does it mean when praying mantis fight each other? Do Dragonflies have 360 degree vision? What is a gladius in a squid? Which plants that grow on other plants but do not absorb food? Whats the difference between a male tarantula and a female tarantulas spider webs? What structure serve as the excretory system for the grasshopper? Is Lorquin's Admiral Butterfly dangerous? What are plants called that lack amino acids called? What do a glistening dragonflies wings indicate? Is an insects warm or cold blooded? What is a bell hornet? How do you get rid of web worms? What kind of organism is found at the end of the food chain? Can you eat a praying mantis? Does the bombardier beetle shoot a boiling-hot liquid at its enemies? Who has the best computer virus software? What kinds of spiders are poisonous? How are grasshoppers and butterflies different?