Answer:
Because they don't have fertilizer.
Explanation:
Well, if this was a long time ago, then farmers did not have fertilizer. So, there are bacteria on the roots of plants that convert nitrogen into a usable form. It's very important for growing, and when farmers harvest the crop, not much of the nitrogen is returned to the land, so it is not as fertile. Fertilizer is largely consisted of nitrogen, so that is why farmers use fertilizers today. But "a long time ago," farmers did not have fertilizer.
A salt or ester of phosphoric acid, containing PO43− or a related anion or a group such as —OPO(OH)2.
Answer:
Amino acids
Explanation:
Nitrogen is a major part of amino acids. Which are the building blocks of proteins and nucleic acids.
OPTIONS:A.Capitalism B.Civilization C. Cultural ecology D.The economy E.Environmental anthropology.
Answer: THE ECONOMY
Explanation: Economy is the term used in Anthropology to describe the relationship between the Behaviors of human and the wider environment such as the Geographical,the cultural and historical aspects.
The concept of Economy in Anthropology started around the twentieth century, it helps to analyse and study the economic life of a set of persons or a society,it also tries to show how humans adapt to harsh economic conditions in order to sustain their lives.
Answer:
glycosidic; galactose.
Explanation:
Lactose is also known as table sugar. Lactose is present naturally in milk and a water soluble sugar.
Lactose is a disaccharide sugar made up of glucose unit. The lactose consists of glucose and galactose linked through the beta 1,4 glycosidic linkage.
Thus, the correct answer is option (2).
