Iron deposit is a natural resource when it occurs?
in high concentrations
with few impurities
in economic quantities
in sedimentary formations
Correct answer is C
No explanation has been provided for this answer.
A soil sample consisting of 49% sand, 28% silt and 23% clay is classified as?
sand
loam
sandy clay
clay
Correct answer is B
No explanation has been provided for this answer.
Plant growth normally ceases, when the temperature falls below?
0°C
6°C
10°C
15°C
Correct answer is B
No explanation has been provided for this answer.
The critical temperature at which the air being cooled becomes saturated with vapor is known as the?
condensation trail
relative humidity
dew point
wet adiabat
Correct answer is C
No explanation has been provided for this answer.
After condensation, the rate of cooling of a rising air mass decreases because it becomes?
stable
lighter
denser
warmer
Correct answer is C
No explanation has been provided for this answer.