Use the information below to answer this question.
Calculate the porosity of the soil sample.
28.21%
42.31%
45.83%
61.54%
Correct answer is A
No explanation has been provided for this answer.
Use the information below to answer this question.
Determine the volume of airspace in the soil sample.
22cm³
26cm³
30cm³
100cm³
Correct answer is D
No explanation has been provided for this answer.
A difference between physical and chemical weathering is that
There is a change in the mineral composition of rock in physical weathering
The mineral composition of rock is changed in chemical weathering
Carbonation is necessary in physical weathering
Wind is necessary in chemical weathering
Correct answer is B
No explanation has been provided for this answer.
Decomposition of soil organic matter is mainly caused by
Bacteria
Algae
Fungi
Nematodes
Correct answer is A
No explanation has been provided for this answer.
The main factors responsible for rock weathering in the desert are high temperature and
Animal activity
Water
Wind
Root growth
Correct answer is B
No explanation has been provided for this answer.