600-word explanatory text

A wide variety of insects can survive in nature for a long time, not only because of their amazing fertility and rich food, but also because they have a set of camouflage skills.

Some insects have ingenious invisibility, such as grasshoppers, and their body color often changes with the change of habitat. When it lives in the grass, it wears green clothes; If you migrate to the withered grassland, you will wear yellow clothes, and there is a kind of grasshopper, which is covered with soil. They often live in the fields, and it is difficult to find traces. Lice, a vampire on the human body, is black when parasitic on human hair; Living in a person's body gradually becomes close to skin color, so it is not easy to be found. This invisibility is due to the protective color of insects.

Some insects also use colors to scare intruders. For example, the spotted gadfly is like a bee with spikes. When natural enemies meet them, they think that bees are coming and dare not make a move. The wings of some golden flower insects and ladybugs have particularly conspicuous markings and luster, which makes birds and other insect-eating animals afraid to get close. This is another protective color of insects-warning color.

Some insects are good at imitating other biological forms. If the stick insect stops on the bamboo branch, it is almost exactly the same as the bamboo branch. The front of the dead-leaf butterfly wings is very beautiful. When it stopped, its wings folded and stood up, grayish brown, almost indistinguishable from dead leaves. Tropical leaf locust, whose wings are like green leaves, looks like a leaf. These are all another camouflage of insects.

When some insects meet natural enemies, they will take temporary camouflage-playing dead. On summer nights, it is often seen that the scarab hits the wall and falls to the ground, pretending not to move, and then resumes its activities when there is no movement around. The inchworm can simulate dead branches and its body is stiff. If someone touches it, it will fall to the ground and play dead.

The more clever the camouflage of insects, the sharper the eyes of birds, which is the competition for survival. It is precisely because of this competition for survival that the creatures in the world can continue to evolve and develop.