Pleas HELP
Animal cells are bathed in an
isotonic fluid, and plant and
bacteria cells h...
Answers: 2
Biology, 21.06.2019 14:30, Franklyn3220
Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided
Answers: 1
Biology, 21.06.2019 15:20, lillysiege
Sydney drew a flow chart to illustrate the nitrogen cycle. which labels best complete the flow chart? x: producers undergo photosynthesis. y: nitrogen compounds are released into the air. x: nitrogen compounds are released into the air. y: producers undergo photosynthesis. x: free nitrogen is in the atmosphere. y: producers absorb nitrogen compounds through their roots. x: producers absorb nitrogen compounds through their roots. y: free nitrogen is in the atmosphere.
Answers: 3
Biology, 21.06.2019 16:00, english8971
Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?
Answers: 2
Biology, 22.06.2019 01:00, teriateria
Nucleic acid certain protein cell membranes certain carbohydrates
Answers: 3
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