The Type O blood group is commonly called as universal donor because any blood group can receive the O blood group. The blood group O has no antigen. Due to the absence of antigen it doesn't agglutinate when come in contact with other blood groups in the plasma.
The agglutination reaction happens when opposite antigen and antibody reacts with each other. e.g.- Blood group A contains antigen A and antibody b and the blood group B contains antigen B and antibody a. Agglutination reaction occurs when the antigen A reacts with antibody a. As O blood group has no antigen, agglutination reaction doesn't occur.
Answer:
The various stages of development in children are reached at a unique time and rate for every child. But there are a number of common key categories to consider when looking at your child’s early health and development. Explanation:
In infancy, toddlerhood, and early childhood, the body’s physical development is rapid (Figure 1). On average, newborns weigh between 5 and 10 pounds, and a newborn’s weight typically doubles in six months and triples in one year. By 2 years old the weight will have quadrupled, so we can expect that a 2 year old should weigh between 20 and 40 pounds.
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Answer:
Cactus plants are able to survive in drier environment because they are able to store water for long periods.
