Potassium deficiency in cereal crops is indicated by
Browning of leaves Trom the tips and margins
Yellowing of younger leaves
Purpling of leaves
White and irregular spots on leaves
Correct answer is A
No explanation has been provided for this answer.
Use the information below to answer this question.
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.
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.