The difference is that emphysema and chronic bronchitis are different types of chronic obstructive pulmonary disease (COPD). <span />
Atoms are the most basic units
Elements are specific types of atoms
Compounds are composed of more than one type of element and are held together by chemical bonds
Human activities in the united states such as burning fossil fuels for electricity, heat, and certain transportation.
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I believe the correct response would be B. Since of evolution were to occur, the possibility of the geographically isolated snakes to reproduce would be 0. Since the gene pool or the collection of all the genes in the population were to change and as a result of future reproductions of the 2 populations over time, transmission of specific genes that code for traits were to be specific for that population, ultimately not allowing them to reproduce.
