circle the answer 2 help please
Which is considered a fossil fuel?
Which is considered a physical science?
Refrigeration has been used since the late 1800s and early refrigerants were
Flammable and toxic
Fluorine compounds, CFCs
The smallest concentration listed below is
Parts per million
Parts per trillion
Parts per billion
Parts per thousand
Which activity comes first in the scientific method?
A patientâ€s body weight is 158 pounds which is equivalent to
The measurement 0.0000043 m, expressed correctly using scientific notation is
4.3 x 10-7
4.3 x 10-6
4.3 x 106
0.43 x 10-5
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