Which of the following choices is an example of a specific defense system? skin
white blood cells
lymphatic system
the immune system

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

10111213141516lactic acid fermentation differs from ethyl alcohol fermentation in thato in ethyl alcohol fermentation co2 is also producedlactic acid fermentation can occur in all living thingsethyl alcohol fermentation can only occur in plantsonly lactic acid fermentation can produce more atp

Why are common names a problem for scientist?