The major source of water to the plants in the diagrams is

The new formed when limestone is subjected to great heat and pressure is

Which of the following pairs of raw materials used in the canning industry ?

Microorganism that decompose organic matter will function best under

In an experiment to determine the percentage of organic matter in a soil sample, The following data was collected :
weight of oven-dried soil before burning =50g
weight of oven-dried soil after burning = 28g
Calculate the weight of organic matter in the soil