Answer:
Bones, teeth, nails, and other hard body parts can be fairly easily preserved as fossils. However, they might become broken, worn, or even dissolved before they are buried by sediment.
The correct answer among the choices listed above is option A. The form of government in which one person controls most of the governing decisions is an autocracy. This is a form of government where one person has the absolute power. It is synonymous to dictatorship.<span />
The process of polymerase chain reaction is similar to the process of DNA replication, which occurs in cells. The statement that is presented is True. It is a technology in molecular biology. It used to amplify copies of piece of DNA across different orders of magnitude, etc.
Answer:
Both epinephrine and norepinephrine are released by the adrenal medulla and they circulate a neurotransmitters and hormones throughout the nervous system and circulatory system. Kara's adrenal medulla is releasing ephinephrine and norepinephrine to prepare her for fight or flight.
Explanation:
Epinephrine and norepinephrine are neurotransmitters and they belong to a class of compounds called catecholamines. While chemically both these neurotransmitters are very similar, they have different functions. Norepinephrine has an effect only on alpha receptors in your arteries, while epinephrine works of both alpha and beta receptors. Beta receptors are in the heart, lungs, and the arteries of the muscles in our skeletal system as well. Both compounds also serve as hormones in the body and having either an overabundance or a deficiency of these compounds can affect your health. Epinephrine can increase your heart rate and smooth out or relax the muscles of your breathing passages so you breathe better when experiencing a fight or flight response. Norepinephrine can constrict your blood vessels and increase blood pressure getting your body ready for action. It is also used to treat very low blood pressure.
The correct answer is letter D.
Explanation: The narrator of the The Adventures of Huckleberry Finn is Huck Finn, he and Tom Sawyer are close friends. He is easily influenced by his best friend.
Tom Sawyer had an incredible amount of emotional influence over Huck. Tom represents the civilized society, that Huck leave behind.