If everything has a reason in life then what does wasps reason to be in life though.. oh! and whats a mosquitoes reason in life??? PLEASE TELL ME!!!???

Wasps are also just important in the environment. Social wasps are predators and as such they play a vital ecological role, controlling the numbers of potential pests like greenfly and many caterpillars. ... A world without wasps would be a world with a very much larger number of insect pests on our crops and gardens.

I guess this is the reason why wasps are important and have a reason in life XD...

I don't know about mosquitoes though...

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .