<span>One test might be the acid content of the water. Water that does not have a neutral pH might be less conducive to life. Another water quality test might be oxygen levels in the water. Inadequate oxygen levels may also reduce the amount of aquatic life. The presence of pollutants might be a third test. Chemicals that poison the water would negatively impact the number and variety of organisms present.</span>
The best soil for most plants for optimum growth is a rich, sandy loam. Loam is an even mixture of the three main types of soil. In most cases, you will need to amend your soil with compost.
As the fertility rate increases, the population will increase. That will probably also have an effect on the region by increasing food security. Hope this helps! So it is as population increases, it also increases food security. Have a BLESSED day! :-) :-)
Surface tension I think. which makes it feel like you are hitting concrete when you fall onto water from extreme heights.