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
:)
ATV stands for All-Terrain Vehicle<span> (</span>ATV), a four-wheeler or quadricycle. <span>ATVs have a powerful drive train with high and low gear ratios. This creates significant danger for the operator. The danger is that w</span><span>ith its wide low-pressured knobby tires, the vehicle may wobble or bounce easily causing loss of control.
</span>Every operator of ATV must understand the uniqueness of the ATV,s design, in order to lower the risk of accidents and injury.
Answer:
Domesticated animals such as cattle, horses, pigs, and chickens were introduced to the Americas by European colonizers. Prior to this, very few animals had been domesticated in the Americas.
Explanation:
Answer: Pencil, personification, true
Explanation:
The pencil is the thing that seems like a real person. Bill is a thing that you can eliminate on a test because he is a person. The pencil is the thing that is screaming, which is why it is the answer. It is personification because a pencil does not normally scream, but a person does. The sentence is supposed to imply that he is stressed, which nervous is a synonym of, so the statement is true.
