In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.
Photosynthesis is (1)/ possible (2)/ because of sun. (3)/ No error (4)
The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called?