Which of the following is true about microorganisms?
  a. 
microorganisms can have both beneficial and detrimental effects on other organisms.
  b. 
microorganisms never have any effect on other organisms.
  c. 
microorganisms can have only beneficial effects on other organisms.
  d. 
microorganisms can have only detrimental effects on other organisms

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a