What is the excretory product of leeches?

Are zygo cactus plants poisonous? The height between a beetle and a snail is? Where do prawns live? Are microbes insects? What kind of spider is small and black and very fast? What types of organisms regenerate? How do worms get their keepers know that the compost is ready? Mollusks have a durable shell made of calcium carbonate and are found where? Do grasshoppers have fangs? Is the common squid poisonous? Are people insects? What bugs bite at night besides bed bugs? Why is a sea star classified as invertebrate? Do flies have meat in them? Plants that live on other plants are called? How do you write a paragraph about foraminifera? Which centipede is poisonous? How has parasitic wasps adapted to its environment? How do you get rid of outdoor gnats? What is the Tiger Moth's habitat?