15. pyrethrin 16. metarn s d) carbamate sodium \"Each of two or more forms of th

Question

15. pyrethrin 16. metarn s d) carbamate sodium "Each of two or more forms of the same element that contain equal numbers of protors but a. An isotope different numbers of neutrons in their nuclei" and is radioactive is: b. A radioisotope d. A radionuclide c. A nuclide The term that refers to low levels of ionizing radiation exposure over long time periods that a. Stochastic effect 18. are associated with an increased probability of the occurrence of an adverse health event is b. Nonstochastic effect d. Acute effect c. Hormesis 19. Sources of extraterrestrial radiation include a. Radon gas c. Pitchblende b. Cosmic radiation d. Radioactive iodine 20.The portion of the optical spectrum that has been most closely associated with adverse human health effects is: a. UVA C. UVB b. UVC d. IRA Extra Credit 21.- _ Itai-itai disease was a form of poisoning associated with ingestion of: a. Lead c. Mercury b. Cadmium d. Arsenic 22. One of the most frequent methods of exposure to beryllium is: b. Via wounds in the skin Workers' inhalation of beryllium in the meat packing industry Via direct skin contact a. d. Through ingestion c. 3. Aluminum has been studied as a factor that may be linked to: 23a Melanosis of the skin Alzheimer's disease b. Chronic renal disease d. Low blood pressure a. c. 24, Agent Orange is an example of a(an): b. Fumigant d. Herbicide a. Insecticide C. Fungicide b. Chlorinated hydrocarbons d. Naturally occurring substances 25. Lindané, mirex, and DDT all belong to a group of pesticides called: a. Organophosphates c. Carbamates

Explanation / Answer

17) a- an isotope

18) a- stochastic effect

19) b- cosmic radiation

20) c-UVB( this rays effects our skin badly and its exposure can lead to premature skin aging and wrinkling)

21) b-Cadmium

23) c- Alzheimer's disease.(aluminium is the most abundant element present and water we drink might be contaminated with this very element and also many food cans are are made using aluminium and certainly alzheimer's desease becomes more active with the help of aluminium which destroys our memory permanently  and other important mental functions.

24) herbicide(highly toxic to human health)

25) b- chlorinated hydrocarbons.

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