Native Americans periodically burned the plains to make better grazing areas for the buffalo
Indicate whether the statement is true or false
T
You might also like to view...
An ideal gas, initially at 30°C and 100 kPa, undergoes the following cyclic processes in a closed system:
What will be an ideal response?
(a) In mechanically reversible processes, it is first compressed adiabatically to 500 kPa, then cooled at a constant pressure of 500 kPa to 30°C, and finally expanded isothermally to its original state.
(b) The cycle traverses exactly the same changes of state, but each step is irreversible with an efficiency of 80% compared with the corresponding mechanically reversible process. Note: The initial step can no longer be adiabatic.
Calculate Q, W, ?U, and ?H for each step of the process and for the cycle. Take 
and 
The customer concern is poor heater operation, and the top radiator hose and both heater hoses are at 160°F. Technician A says this problem is caused by a plugged heater core. Technician B says the thermostat must be stuck open. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
What is efflorescence in brick walls?
What will be an ideal response?
When the first European settlers arrived, which of the following was not a check on the population of herbivores?
A) disease B) climate C) predators D) market hunters