求一篇英语作文[what role do the animals play in our lives?]

animals are master of the nature. they settled in the world much earlier then humans. the nature food chand chain can't exsist and maintained without the endless shifting of animal's mutiplying, growing and death. animals as a essential lifebeing they create everything including the life of human. to talk about animals that playing a important role in our daily life, we must mension the food. we use and consume lots of products that involve animals; particularly the milk ,as our daily diary product everyone needed it to be part of their food/ drinks. the cow skin makes us leather products- furnitures, bags, shoes, clothing as such. we creat number of indispensabilities by animals contribution. Moreover, animal also can be the a friend to us. " dog is the best friend of us". as we know, people have feed animals for their pets and assistances from so long ago. guide dog is the eyes of blind people. therefore, animals are not just the supplier to our precious needed.