Even though natural gas is the cleanest of the fossil fuels, which of the following are problems with natural gas? select all that apply.
a. it is dangerous if directly inhaled
b. it releases the most toxins when burned
c. still adds carbon dioxide to the atmosphere
d. can have gas leaks which are a safety hazard because it is colorless and odorless
e. it is not a very abundant energy source
Answers: 1
Biology, 21.06.2019 17:20
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Biology, 22.06.2019 05:40
Glycogen is an energy-storage molecule in humans. a hormone that is called insulin controls the storage of glycogen in the liver. insulin is made up of amino acids.
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Biology, 22.06.2019 05:50
The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes
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Biology, 22.06.2019 07:30
Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.
Answers: 1
Even though natural gas is the cleanest of the fossil fuels, which of the following are problems wit...
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