because they want to
Humans produce animals with certain desirable characteristics through selective breeding.
From the earliest days of agriculture following the end of the last ice age. Humans began selectively planting only those seeds producing the most desirable food.
Humans selectively breed plants and animals to produce desired characteristics, such as higher yield, better taste, or specific traits like disease resistance. This allows individuals to create new varieties that are better suited for specific purposes, such as agriculture or companionship.
Animal husbandry is the management and care of farm animals by humans for profit, in which genetic qualities and behaviour, considered to be advantageous to humans, are further developed. The term can refer to the practice of selectively breeding and raising livestock to promote desirable traits in animals for utility, sport, pleasure, or research, but also refers to the efficient exploitation of a species in agriculture advantageous to humans. United Nations Farms
vegetable gardens!
Orcas are harmless to humans unless they are provoked. They typically do not want to attack humans because they are not desirable prey.
Cell membrane is elastic and transparent. It can be impermeable, permeable, semi-permeable or selectively permeable. In humans the plasma membrane is selectively permeable that is it allows entry to certain substance.
Any vegetable, or any cereal crop. Wheat, rice, peas, carrots,.... go on, think of your own!
Humans produce about 40,000 litres of saliva in a lifetime.
Seaweed, but not really a veg to humans.
They would not reproduce. This would mean they would die. This would mean we humans would have no vegetable food, nor would the animals we eat. This would mean we would die.
Desirable or not, it's pretty much unavoidable. Computers count faster and more accurate than humans, cost less than people's wages too.