 Now, we talk about some other applications of biology. Application of biology in animal farming or animal cultures. Human beings traditionally use animals in the culture, breed animals for getting milk, for getting meat, for getting eggs and many other products. Like we take eggs from hens from ducks, we take milk from cows, buffaloes, goats, sheep. We get wool from the sheep, we use leather of the organisms, large organisms or small buffaloes or goats for making our shoes and jackets and other things. We get honey from honeybees, we get silk from silkworms. We culture fish for a very good form of protein, we grow the pearl oysters to get pearls. There are a lot many industries, animal industries, animal based industries in which we grow animals and we get products. In all of these industries, biology, the knowledge of biology can help us, we just look at how. There are different types of animal cultures, if we talk about them in terms of biology. Aquaculture, the culture in water like fish culture, fish farming, we grow ornamental fish, we usually have, we like to have beautiful aquaria in our houses. Ornamental fish culture, we use a specific term, sari culture. Sari culture is the term for growing silkworm, for making silk. We have dairy and poultry industries, dairy for getting milk and poultry for getting eggs or proteins. Apiculture, apiculture is the honey bee keeping, we culture honey bees to get honey. We also have to deal with some animals which are not good for us, the pests. Biology help us as biological pest control, that is we can perform a pest control with the help of some living organisms, we look at them one by one. Fish farming, prawn culture, culture of the pearl oysters, other aquacultures, we in some areas of the world people culture the clams, the freshwater clams, they culture the lobsters. When we grow fish in large pounds, the fish farming, we can get number one protein, a good form of protein out of these fishes. And also there are lot many byproducts of the fishing industry, when we get protein and remove all the other parts of fish, we get many other byproducts which are used in some times cosmetics in some other industries. How biology helps us in the aquaculture? Biology help in improvement of fish varieties and also extraction of various products from these. This is extremely important that when we are growing fish in a fish farm, sometimes we grow monoculture that is only one fish in a pound, one type of fish in a pound. But many times the biology, the study of biology tells us that if we grow a combination of fishes which are related to each other, somehow they are which are beneficial for each other or which can easily live with each other, we can grow them in the same pound. For example, study of biology tells us that some of the fishes they live only in the surface of the water, some of the fishes lives in the middle layer of the water, some of the fishes lives the bottom layer of water, they could be grown in the same water without disturbing each other. And also sometimes we grow the herbivore fishes that is fishes which eat only vegetables. But if we grow some carnivore fish, they will eat upon the herbivore fishes and will finish them. So the study of biology tells us that how can we select the best varieties or the best types of fishes in the same pound. And of course this will give us best yield, better yield. Biology also tells us about the feed of the fishes, which food is good for those fishes which we are growing. If we give them particular food, their growth is say may be reduced. If we give them a better designed food, then their growth may increase a lot also diseases. Because when we are growing them, there could be attack of various types of diseases upon them, virus attack, parasite attack or anything else. Biology can help us in finding out that what are the causes of those diseases and how can we treat them using different types of medicines or may be other biological ways. So and also with the help of genetic engineering sometimes we can add more varieties. Even if we do not use genetic engineering techniques, we can use some improved breeding techniques based upon the knowledge of different types of groups of fishes. We can use some improved breeding techniques which can give us better varieties to grow and they give us more proteins or more of the products, may be more prawns, may be more pearls or may be more good varieties which have a better quality of protein or more quantity of protein. So biology helps a lot in the fishing industry. Same is true for the growth of ornamental fishing, we like to grow beautiful fishes in aquaria, in our houses, in shopping plazas, in hotels, in various places. They are when the fish are growing in aquaria, this is a specific in different environment. How we can feed them? How we have to control the diseases in this small environment? In which quantity we have to provide them food, oxygen? How we remove their waste materials to keep our water clean and grow our animals well? Biology tells us all about that because biologists study the life cycles of these organisms and their characteristics and their properties. So biology help us in growing our ornamental fish as well. Now we come in the sari culture. Sari culture are culturing the silkworm or silk moth for making silk. This is a popular home industry in many areas of the world. There are lot many people who are growing it because it is a simple and easy industry. How we do it? We just simply talk about the process. Silk moth is sort of a worm and it makes silk. Biology helps us in improvement of this culture. What happens is that silk moth lays eggs and those eggs when they hatch they make larvae. These larvae feed on the mulberry leaves, these larvae could be grown on the mulberry leaves and then they are converted to a specific structure called cocoons. Coons are actually threads of silk. These larvae actually secrete threads of silk around them and the farpers who are growing them they separate their thread and then use it for making silk. Biology actually helps in improvement of the breeds of these particular silkworms. How we can improve the silkworm or silk moth? How we can get better varieties? And how can we grow them better to get maximum quantity of the silk and also in disease control? Because silkworms they also particularly when they are larvae and they are cocoons they are making their cocoons there are they could be attacked by different diseases. In controlling their diseases, biologists also help. Now we talk about dairy in the poultry. In the poultry industries, biology plays a very important role. Most importantly when we need better varieties of our animals.