I am involved with a community garden and an interactionist might like to study our organization. We have some very knowledgeable people like ex soil scientist's to guide us and we believe in thoro ugh discussion of our plans for work in the garden and encourage everyone to participate and our work is very co-operative and we love what we are doing because it is for the benefit of all of us plus the wider community who can grow vegetables in our garden. Therefore our truly democratic and giving model could be studied for benefit.
Well the top three hardest are Diamond, Sapphire and Ruby, and an easy way to remember is: red-white & blue stones! The hardness of a gemstone is measured on its place on Mohs scale of hardness. 10 on Mohs scale being the hardest known naturally occurring substance– and the honor goes to the diamond
Although the hardest natural stone on the planet is a diamond that is rated ten on the Mohs scale, granite is known as the most durable and hardest natural stone that is used in construction material and is measured six on Mohs scale.
The hardest mineral commonly found in granite is quartz, which is normally a somewhat translucent, white to grey colored mineral.
<em>(</em>so from your options granite is the hardest to scratch <em>)</em>
hope it helps you
:)
I don't have time but some good starting points are Piaget's theory of development and Erik Erikson's chart.
there is more tech these days so u can get more info about ur job online