It is extremely useful for geologists, because most specimens of a given mineral are very close to the same hardness. ... So, we can conclude that not all the rocks are hard, and the hardness of rocks depends on how the atoms of the rock's minerals are bound to each other and how they are arranged.
I believe it is the frequency, because when a oscillation occurs that is the starting point to determine when another wave is to come.
phosphorus, soil, water, oxygen
Explanation:
Phosphorus, soil, water and oxygen are renewable resources that can be found freely on earth.
Renewable resources are natural resources that can easily be replenished as they are used either by natural means or through cyclic processes in our human life time.
- Phosphorus, soil, water and oxygen are easily replenished by natural processes and through the biogeochemical cycle of materials.
- Fossil fuels, trees are not renewable as they can easily be depleted.
- Non-renewable resources must be used sustainably to ensure their all round availability.
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Observations for a recluse spider bite exhibits the signs and symptoms of the ff:
- the skin is reddened, and will be followed by blisters that will be forming on the bite site.
- in 2 to 8 hours of the bite, intense pain will be felt by the victim or the patient, and is accompanied by itching.
- a week after the bite, an ulcer or a sore (open) with necrosis (breakdown of tissues) will develop and may take up to a month to heal.
