S waves are slower than P waves and they can only travel through solid rock. S waves move the particles it pushes through up and down or side to side (perpendicular to the motion of the S waves energy).
This is called 'controlled' or 'prescribed' burning. Usually fires in the environment are regarded as undesirable and dangerous, but fires actually fulfil an important ecological role, and animals and plants had adapted to a certain frequency and intensity of fires. The seeds of some trees or grasses germinate after forest or grass fires, as the more open conditions after a fire allows the seedlings to compete and avoid being shaded and smothered by more established trees. Unfortunately, farming and forestry practices have in many cases resulted in a reduction of fires. A reduction in the frequency of fires also allows the build up of dead wood, and when a wild fire does occur, the amount of available fuel results in very hot, large and damaging fires. Therefore, management of forests and other environments such as prairies often use controlled burns to avoid the buildup of dead organic mass and to replicate the natural fire cycle.
Answer:
The pituitary gland refers to a small gland, which is situated in the sella turcica. It is considered the master gland of the body. The pituitary gland comprises two prime parts, the posterior pituitary gland and the anterior pituitary gland. The anterior pituitary gland produces six hormones and discharged them into the bloodstream.
The following are the hormones produced by anterior pituitary gland:
1. The growth hormone that monitors metabolism, growth and body composition.
2. Adrenocorticotropic hormone that instigates the adrenal glands to produce steroid hormones, mainly cortisol.
3. Follicle-stimulating hormone and luteinizing hormone, also called gonadotropins, which functions on the testes or ovaries to instigate the production of sex hormone, and maturity of sperm and egg.
4. The thyroid-stimulating hormone that instigates the thyroid gland to discharge thyroid hormones.
5. Prolactin that instigates the production of milk.
Answer:
Prime attributes are the attributes of the candidate key which defines the uniqueness
