are they related to humans?
No.
Insect
Although pest insects attract the most attention, many insects are beneficial to the environment and to humans. 
where can you find noisy miner? Eastern and southeastern Australia. how do they behave socially? They are a gregarious species that move and roost in colonies. what do they feed on? Nectar, fruit and insects. what is the scientific name of the last one? Insecta. how do they evolve? They've evolved gradually, both their defense mechanisms against predators as well as complex groups of coevolved species like pollination, which is beneficial to both organisms. is the species mentioned above used in agriculture? UNANSWERABLE
wiki:24687765
Insect [SEP] In beneficial roles
Although pest insects attract the most attention, many insects are beneficial to the environment and to humans. Some insects, like wasps, bees, butterflies and ants, pollinate flowering plants. Pollination is a mutualistic relationship between plants and insects. As insects gather nectar from different plants of the same species, they also spread pollen from plants on which they have previously fed. This greatly increases plants' ability to cross-pollinate, which maintains and possibly even improves their evolutionary fitness. This ultimately affects humans since ensuring healthy crops is critical to agriculture. As well as pollination ants help with seed distribution of plants. This helps to spread the plants, which increases plant diversity.