The two primary causes of ocean currents are?
differential algae development and sunlight penetration
differential salinity and temperature variation
variation in evaporation and coral development
location of settlements and sea-level pressure
Correct answer is B
No explanation has been provided for this answer.
Soil texture is determined primarily by?
profile horizons
major components
particle sizes
nutrient status
Correct answer is C
No explanation has been provided for this answer.
A piece of evidence that confirms that the earth is spherical is the?
standard time
solar system
earth's orbit
moon's eclipse
Correct answer is D
No explanation has been provided for this answer.
The weight of water vapour contained in a given volume of air is referred to as?
absolute humidity
specific humidity
relative humidity
vapour pressure
Correct answer is C
No explanation has been provided for this answer.
The two potent human factors that destabilize ecosystems are?
afforestation and logging
monocropping and reforestation
reforestation and mining
monocropping and mining
Correct answer is C
No explanation has been provided for this answer.