Nutrients lost by trees in leaf-fall can be re-used by the trees because the?
trees are renewable resources
nutrients circulate in the ecosystem
nutrients are inexhaustible
trees store nutrients
Correct answer is B
No explanation has been provided for this answer.
The most important environmental resources that sustains natural processes in an ecosystem is?
light
water
air
energy
Correct answer is B
No explanation has been provided for this answer.
The process by which materials are physically transferred from one soil layer to another is called?
leaching
physical weathering
illuviation
eluviation
Correct answer is A
No explanation has been provided for this answer.
Sahel
Sudan
Guinea
Derived
Correct answer is B
No explanation has been provided for this answer.
Planetary winds are deflected on crossing the Equator due mainly to the effects of?
Coriolis force
Ferrel's law
the jet stream
gravitational force
Correct answer is B
No explanation has been provided for this answer.