The two most important factors influencing the evolution of a climax vegetation are?
soil and topography
soil and time
climate and time
climate and topography
Correct answer is B
No explanation has been provided for this answer.
The primary importance of nitrogen-fixing organisms in the ecosystem is that they?
increase atmospheric nitrogen
enrich the soil
prevent soil erosion
degrade the soil
Correct answer is B
No explanation has been provided for this answer.
The process of mountain -building by either folding or block faulting is known as?
wraping
orogenesis
weathering
orocline
Correct answer is B
No explanation has been provided for this answer.
The carbon cycle is more prevalent in the?
hydrosphere
ionosphere
lithosphere
atmosphere
Correct answer is D
No explanation has been provided for this answer.
One of the most hazardous types of tropical cyclones is the?
Chinook
hurricane
tsunami
thunderstorm
Correct answer is D
No explanation has been provided for this answer.