The pH scale is a range from 

If you discovered a new species of bottom dwelling rockfish in a fisherman’s net, you could assume it was from the 

The second law of thermodynamics is that 

The nitrogen cycle is disrupted by humans in two primary ways, burning fossil fuels releasing nitrogen oxides and 

The first law of thermodynamics is that

“Chemical X” was used widely in the United States as an insecticide for many years. Eventually, research showed “chemical X” was a persistent chemical that bioaccumulated and biomagnified in the environment. The chemical was later banned from use in the United States.   You are writing a report on the history of chemical X in the United States. Your instructor says that all sources used for your report must be primary sources. Which of the following would you choose?

Buffers are capable of 

People and their culture that have existed continuously dating back to a time before their land was  invaded or colonized by other societies are known as…

When an atom has an electrical charge, we would call that a(n)

If you see a cell through a microscope and you see a cell that has organelles, you can determine that it is