Bees are one of our most important pollinators and the major pollinator of fruit flowers. They are also "friendly" pollinators. In exchange for the nectar they give us honey. As beautiful as most butterflies are, when we give them nectar, they give us caterpillars which eat the crop.
Bees are important pollinators. In fact, there is something of a crisis in agriculture because bee populations are declining in the face of "colony collapse disorder." Unless a cure is found, many vegetable products may become scarce and expensive. BTW, "THEIR fruit orchards," the ones over THERE.
farmers selectivly breed cattle to get the characteristics they desire for the job they are going to put the offspring to do
yes
"Puppy farmers" or those who run puppy mills breed any breed of dog that is known as a fad or is the most popular among families. These includes Laboradors, Chihuahuas, Yorkies, etc.
Farmers in South West England have a breed of sheep that loose their wool automatically in the spring, this breed is called the Exlana.
The question cannot be answered without more detail.
Farmers don't usually breed honey bees, but they do need them for pollination purposes depending on the type of farm. For example, a livestock farmer doesn't need bees but a fruit farmer definitely does need bees.
Artificial selection.
Because this breed produces more milk per year and/or per day than any other dairy breed.
more hens = more eggs + more chickens (possibly more hens) = £££££
Bees are used to pollinate the trees. As they fly from flower to flower, from tree to tree, pollen attached to the bees is transferred between trees which pollinates them, allowing them to produce fruit.
Darwin observed farmers performing artificial selection. The farmers would keep the best specimens and sell the lesser ones. This caused their own stock to improve over time.