It's your job to do please for animals face on like features you put the alligator into one group reptiles the other 3 animals going to the group mammals what is the best way to divide the mammals and due to smaller groups

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.