Answer: Polychlorinated biphenyls (PCBs) are a group of manmade chemicals. They are oily liquids or solids, clear to yellow in color, with no smell or taste. PCBs are very stable mixtures that are resistant to extreme temperature and pressure. PCBs were used widely in electrical equipment like capacitors and transformers. They also were used in hydraulic fluids, heat transfer fluids, lubricants, and plasticizers. The primary company that made PCBs in the United States was Monsanto Inc., mainly using the name Aroclor. Commercial production of PCBs ended in 1977 because of health effects associated with exposure. In 1979, the U.S. Environmental Protection Agency (USEPA) banned the use of PCBs; however, PCBs are still present in many pre-1979 products.
Answer:
its parents.
Explanation:
its parents hold a dna code
Answer:
lipids is nitrogen nucleic acids is phosphorus
Explanation:
I guessed but I am not sure
Answer:
A. 35Cl-
Explanation:
According to the electron for diagram attached to this question, a neutral chlorine atom i.e with a charge of 0, is shown to contain 7 valence electrons in its outermost shell. This means that in order for chlorine to have a stable arrangement of eight valence electrons, it must gain one more electron.
Gaining one more electron, for a neutral chlorine atom, means that it now becomes an atom with one negative charge i.e. an anion (Cl-). Therefore, based on the attached diagram, the symbol "35Cl-" shows a chlorine atom that have a stable arrangement of eight valence electrons.
the presence of food in the stomach typically causes release of gastrin, but low pH inhibits release of gastrin.