The Insects -

are the most diverse and abundant group of animals on Earth, making up more than half of all living species. Often called "the little things that run the world," they are essential to the functioning of almost every terrestrial ecosystem, serving as pollinators, decomposers, and a primary food source for many other animals. Key Characteristics

: Insects act as nature's janitors, breaking down dead plant and animal matter, which returns vital nutrients to the soil. The Insects

Insects are crucial to the planet's health, performing roles that humans often take for granted: are the most diverse and abundant group of

To be classified as an insect (class Insecta ), an animal must typically have: Insects are crucial to the planet's health, performing

: Scientists estimate there are roughly 1.4 billion insects for every human on Earth.

Most insects undergo , a dramatic change in form from birth to adulthood.