Diagram J is a protease while diagrams K,L,M, and N are food substances, study them and answer this question.

After a reaction between protease J and the food substance, the end product would be 

The property of clayey soil that prevents it from supporting thick vegetation is its?

which of the following practices will not maintain soil fertility?

A group of organisms of the same species living in a particular place is known as 

The diagram below is an illustration of an experiment on sedimentation of soil, use it to answer this question.

The organic component of the soil is labelled