False. Nuclear fission or whatever the reactions are called creates high amounts of radiation, which are dangerous, especially if around for a long time Nuclear energy is VERY good though.
Answer:
True.
Explanation:
Glucocorticoid steroid hormones are secreted by adrenal glands by stimuli arising from the hypothalamus of the brain. Adrenal glands are situated at the upper poles of the right and left kidneys. Glucocorticoids are usually secreted in response to stress.
Adaptation
The idea of "survival of the fittest" applies here. The phenotypes of the organisms the survive are the ones that get passed on to future generations while those of organisms who die off do not pass their phenotypes. Only the phenotypes that are better suited to the environment get passed on and, therefore, occurs more frequently in their populations.