Countries in the Southern Hemisphere tend to be poorer than countries in the Northern Hemisphere
a. True
b. False
Indicate whether the statement is true or false
True
You might also like to view...
In cogeneration systems
A. both heating and cooling are produced. B. both coal and oil are used. C. use a battery in case the main system fails. D. two useful forms of energy are produced from the same fuel source. E. heat from the earth is used to produce electricity.
A scientific theory must be:
a) Based on confirmed observations b) Able to explain ALL observations c) Consistent with every observation made and with every other scientific principle d) Internally consistent e) All of the above
In a blast furnace, coke, which is solid carbon, reacts with O2(g) to form carbon monoxide. The carbon monoxide then reacts with Fe2O3(s) to produce solid iron and carbon dioxide. Which of the following is the balanced equation for this combined process?
A) 2 Fe2O3(s) + 3 C(s) + 3 O2(g) ? 2 Fe(s) + 3 CO2(g) B) 2 Fe2O3(s) + 2 C(s) + 3 O2(g) ? 4 Fe(s) + 2 CO2(g) C) 2 Fe2O3(s) + 6 C(s) + 3 O2(g) ? 4 Fe(s) + 6 CO2(g) D) 2 Fe2O3(s) + C(s) + 3 O2(g) ? Fe(s) + CO2(g)
The greatest diversity (numbers of different species) of organisms can be found in ________
A) insects B) birds C) flowering plants D) fish E) mammals