A difference between physical and chemical weathering is that

Use the information below to answer this question.
In an experiment on soil porosity, the following results were obtained:
Volume of dry soil = 52cm³
Volume of water= 48cm³
Volume of soil and water=78cm³

Determine the volume of airspace in the soil sample.

Use the information below to answer this question.
In an experiment on soil porosity, the following results were obtained:
Volume of dry soil = 52cm³
Volume of water= 48cm³
Volume of soil and water=78cm³

Calculate the porosity of the soil sample

The diagram below illustrates a tool used to analyse a soil sample in an experiment. Use it to answer this question.

The aim of the experiment is to determine the soil

The diagram above illustrates a tool used to analyse a soil sample in an experiment. Use it to answer this question.
The part labelled Ill will contain