1. Timothy's symptoms are loss of coordination and stamina, sudden increase in growth rate, painful joints, nausea, worse school performance (probably cognitive decline) and changes in personality, such as depressive mood, introversion, anxiety and tension. The organ system which could be implicated in these deficits is the thyroid gland, an important part of the human endocrine system
2. The thyroid gland is an endocrine gland located in the neck, behind Adam's apple. It produces two thyroid hormones, thyroxine and triiodothyronine, and calcitonin. The thyroid gland is a very important regulator of metabolism, protein synthesis and development. In particular, thyroid hormones regulate the body's metabolism, by controlling the way the cells produce and consume energy.
3. Hyperthyroidism is an endocrine condition in which the thyroid gland produces an excessive amount of thyroid hormones. It is the case of an overactive thyroid and its main symptom is the acceleration of the metabolism. Timothy's symptoms that could suggest hyperthyroidism are his sudden increase of growth rate and inability to gain weight, his nervousness and mood changes, and his fatigue or loss of energy.
4. Cortisol is a steroid hormone that is produced by the adrenal gland. It is considered the body's stress hormone, as it is released in response to a stressor. It is also produced in response to low blood-glucose concentration. Some of its functions are the increase of blood sugar and the suppression of the immune system and bone formation. Cortisol is also involved in the metabolism of macronutrients.
I think B is the answer The Clean Air Act That prevented air pollution and protected the ozone layer as well as promote public health. This act gave Enviromen. Protection Agency the power to take effective action fighting environmental air pollution
