You might wonder why a millibar isn't exactly 1/1000th of an atmosphere. The unit is actually related to the old CGS units because atmospheric pressure is close to this unit. In CGS units 1 bar = 1000 dynes/cm2
Pressure is often incorrectly reported as kg/cm2, which is neither a legitimate pressure unit nor a standard SI unit (pressure is force/unit area, and kg are a mass unit, and SI units never mix kg and cm). So let's straighten out your friends on these units. Standard air pressure in this incorrect unit is 1.034 kg/cm2. The weight of a kg at the earth's surface is 980,000 dynes. So what is standard air pressure in millibars?
A) 1143 mb B) 1013 mb C) 750 mb D) 890 mb
B
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In which region in the map below are fauna similar even across islands because the areas within that region were once together as part of Gondwana?
A) A
B) B
C) C
D) D
Which gymnosperms made their appearance in the Triassic and became very widespread?
a. angiosperms b. cycads c. horsetail rushes d. seed ferns
e. cryptospermsFamine is dietary energy consumption that is continuously below the minimum requirement for maintaining a healthy life and carrying out light physical activity
Indicate whether the statement is true or false.
Electric power is measured in ________
A) volts B) base load C) peak load D) amperes E) kilowatt hours