Kkeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
The correct answer is option A, that is, a ratio of 1 carbon atom to 2 hydrogen atoms to 1 oxygen atom.
Carbohydrates are the main source of diet, they provide energy to the body, mainly via glucose, a basic sugar, which is a part of the starch and an ingredient in various staple foods.
The carbohydrates can be signified by the stoichiometric formula, that is, (CH2O)n. It can be also be stated that the ratio of the carbon to hydrogen to oxygen is 1: 2: 1 in the molecules of carbohydrates. Carbohydrates are further categorized into three sub-kinds, that is, monosaccharides, disaccharides, and polysaccharides. The monosaccharides are the simple sugars, for example, glucose.
Answer:
Option (B).
Explanation:
Evolution is the process of the change of the species characteristics with the passage of time. The species that can adapt better in the environment has high chance of survival.
Human evolution has explained well in the evolution and involves human development from the ancestral primates. The human evolution has occurred at the short time might occur due to some genetic changes or mutation. The evolution of the human chromosome 2 has occurred in relatively short period of time. This shows that human have specific objectively measurable properties.
Thus, the correct answer is option (B).
Because it was to cold for them to plant and raise crops