Question

agriculture and animals husbandry are both sides of same coin how can you justify this?

Answer 1

They are both used in the same field. For animals these crops are the source of food and nutrition  and for these crops, these animals are the source to plough and water the land. Their waste is used to fertilize the land too. SO they are both beneficial for each other. This makes them both sides of the same coin. 

Answer 2

agriculture and animals husbandry are profitable to each other for crops wastes wastes of animals are used in fertilizing the crops and ploughing and for animals crops are used for energy and nutritional sources. By this we can say that agriculture and animal husbandry.