Course

Ecology

Study Pack

Set 7 Nutrients

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Question 1

(Multiple Choice)

Free
In addition to hydrogen, carbon and oxygen, the elements required in the greatest amount by most living things are:

A) Potassium, nitrogen, and sulfur
B) Sulfur, potassium, and calcium
C) Calcium, magnesium, and iron
D) Iron, sodium, and chlorine
E) Nitrogen, phosphorus, and potassium

Answer

Question 2

(Multiple Choice)

Free
The large carbon mass of plants and animals is supplied by:

A) Soil
B) Freshwater
C) Air
D) Lightning strikes
E) Saltwater

Answer

Question 3

(Multiple Choice)

Free
Finely ground organic material in the soil is known as:

A) Topsoil
B) Humus
C) The zone of eluviation
D) The zone of deposition
E) The C horizon

Answer