Joshua uses his the thermometer and finds the  boiling point ethyl alcohol to be 85 Celsius. He looks in a reference book and finds that the actual boiling point of ethyl alcohol is 80 Celsius. What is his percent error ?

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.