Insect are the largest group of organisms on Earth. They belong to the phylum arthropoda and class insecta. They have hard exoskeleton, antenna, they have three pairs of legs and their body is divided into head, thorax and abdomen.
Insects are biological resources in that they help control weeds and insects pest.
The insects are use as weed control in that they feed on the weeds i.e they use the weeds as food there by absorbing the nutrients for weeds development, which lead to their inability to survival. Some canivorous insects feed on insects pest i.e use they as food, thereby reducing their harmful effects in the ecosystem.
Insects are vital components of the ecosystem, they are a large and diverse group of organisms.
Insects help to to control weed and insect pests through what is known as biological control. Natural enemies of the pest which are also known as biological control agents include; pathogens, competitors, parasitoids and predators. This biological agents are introduced into a new environment where they do not naturally occur thereby causing a reduction in the population of pests and weeds.
If a researcher electrically stimulates the reticular formation in an animal, the animal will immediately wake up and be alert. Its purpose is to have some control of sensory signals and thus has the ability to alert the body when it is tired or needs to be awake.
