By Two Years of Age,children Have Reached About _____ of Their

question 81

Multiple Choice

By two years of age,children have reached about _____ of their adult weight and about _____ of their adult height.

• A)one-half; one-fourth
• B)one-fifth; one-half
• C)one-third; two-thirds
• D)one-fourth; one-fourth

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Definitions:

Antigens

Foreign substances that induce an immune response in the body, especially the production of antibodies.

Passive Immunity

Immunity acquired by the transfer of antibodies from another individual, as opposed to the body's own production of antibodies.

Active Immunity

Ability to produce antibodies due to the immune system’s response to a microorganism or a vaccine.

Cowpox

A disease caused by the cowpox virus, historically significant for its role in the development of the smallpox vaccine.