Freedom and individuality, Tū recommended that the brothers kill their parents so they can be happy, not because he's a cold hearted person.
Thymus: immune system; thyroid: growth and development
Thyroid is located in the neck and thymus is inside the chest region. Thyroid is producing a hormone that will control growth and development. That makes thyroid suppressing drug is dangerous to a pregnant mother because it can make slow her child growth. Thymus will be smaller by age so it's mostly found on a child.
The answer should be A, the age difference between participants.
Scientific equipment has helped athletes gain a competitive edge in the Olympic winter games by improving their routine work-outs, and helps them achieve the level of athletic ability that they needed to.