What advantage is the difference in the shape of an earthworm and two ends?

Where does a daphnia live? What sound do grasshopper make? Will bleach and ammonia combined kill bed bugs? Do humans really eat insects without knowing? When the tarantula active? What happens when a praying mantis lands on your house window? How many maxillae does a grasshopper have? Where did stick insects origionaly come from? Is it safe to use Ambien with Prozac? How might an earthworms lack of appendages be an adaptation to burowing? Where is spot the difference in bin weevils? What is the difference between bee dragon fly or moth? Do ants get diabetes? What is a easy definition for micro villi? Does citrus fruit mold start from the inside out? What happens when you kill a snail? Is a firefly an example of incomplete metamorphosis? Do praying mantis get along with grasshoppers? Do citronella plants repel horseflies? Is there a Natural recipe to get rid of bugs on plants?