***these are two separate questions*** 1. in complete sentences, describe two differences between amphibians and fish. 2. what are two examples of amphibians? *** in a ! ***

Dna and rna share a number of similarities,but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the

Describe how viruses and bacteria can be used as biological weapons. what are some of the potential threats and potential benefits? do you agree with the use of viruses and bacteria as biological weapons? why or why not?