SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Green manure also helps in the reclamation of ______ soils.

______ is a soil conditioner as well as a fertilizer, that is rich in nutrients.

Green manure is obtained from undecomposed green material derived from ______ plants.

List the leguminous plants providing green manure.

Mention the advantages of Green Manure.

What is green manure? How is it beneficial?

Which one of the following is not an abiotic factor? 

The process of the water cycle that is related to the plants is called ______.

Rain is due to the process of ______.

Biological oxidation is the method is used in ______.

The wastes removed in tertiary treatment are ______.

India accounts for ______% of all recorded species. 

______ is the study of patterns, and processes in the natural world and their modifications by human activities.

The biosphere is a ______ and ______ and system.

The cyclic flow of nutrients between non-living and living factors of the environment is termed as ______ cycle.

______ is the reverse of vaporization.

Match the following:

Assertion (A): Biosphere is a dynamic and stable system.
Reason (R): There is a constant interaction between biotic and abiotic components in the biosphere.

Name three Biogeochemical cycles.

List the forms of Precipitation.