The most obvious example of the interconnection of organisms in a community is the food chain. Take this food chain for example. The white hare eats grass, the fox hunts the white hare, and the bear can easily eat the fox. If there were no ordinary grass, the white hare would not eat it, and as a result, the fox would not be able to eat the white hare, and the fox bear. The natural chain is broken.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.