Plants which manufacture food from simple inorganic substances are called
heterotrophs
autotrophs
photosynthetics
decomposers
microbes
Correct answer is B
No explanation has been provided for this answer.
An ecosystem has all the following characteristics except that it is
integrative
structured
a component
a system
a function
Correct answer is A
No explanation has been provided for this answer.
Which of the following is the most important use of the natural vegetation in savanna regions?
Wildlife habitat
Grazing
Firewood
Lumbering
Hunting
Correct answer is B
No explanation has been provided for this answer.
The most predominant action in the first horizon of a soil profile is
illuviation
eluviation
deposition
sedimentation
transportation
Correct answer is B
No explanation has been provided for this answer.
A soil particle whose diameter is between 0.05mm and 2.00mm is classified as
clay
loam
sand
silt
gravel
Correct answer is C
No explanation has been provided for this answer.