A dark-coloured substance formed from dead remains of plants and animals is called
Which of the following layers of soil supports plant growth?
The water holding capacity is highest in:
Why is organic matter (humus) an important part of soil?
What is soil erosion?
Which of the following factors is/are responsible for the depletion of the world’s natural resources?
i. Increasing numbers of vehicles in use
ii. An increase in the human population
iii. The greater use of biodegradable products
Terrace farming helps in:
A flash flood is a flood that:
Which of the following is an environmental consequence of floods?
Which of the following statements is false?