Another way to collect a stool sample is to loosely place plastic wrap across the rim of the toilet, under the seat. Then place the stool sample in a clean, sealable container before taking to the laboratory. Plastic wrap can also be used to line the diaper of an infant or toddler who is not yet using the toilet. The stool should be collected into clean, dry plastic jars with screw-cap lids.
The potential variations in the properties of agricul-. tural soils are less well known. Diaz et al. (1994) have. reported that under a climate change scenario the soil. organic matter content and erosion rate would de-. crease with regard to current values in the Arrecifes. River basin.
3. How does climate affect soil formation? 4. How do organisms affect soils? 5. What is âreliefâ and how does it affect soil formation? 6. Where can the parent material for a soil come from? 7. How can time affect soils? Part C. Soil Structure (Link #4 â www.enchantedlearning.com/geology/soil/ 1. Tape or paste the soil table into your notebook.