Answer:
The hardness rating is 4.
Explanation:
Calcite sits at a hardness rating of 3 and is very easily scratched with a knife and/copper coin. This is where most Marbles, limestones, travertines, rate.
Meanwhile, Fluorite sits at hardness 4 and can be scratched by a knife.
Answer:On this day in 1776, the Second Continental Congress adopted the United States Declaration of Independence in what is now known as ... Today, we celebrate our Nation's independence and the vision of our ... Over the past months, the American spirit has undoubtedly been tested by many challenges.
Explanation:
The statement is true. This is because the chemical formula for a salt compound (a compound is made up of two or more atoms of elements) is NaCl, where Na is Sodium, and Cl is Chlorine. Hope this helps!
Answer:
I think the answer is D: Infrographic that shows carbon moving through ecosystems
First one is C) A phosphate group is added, and the second is D) Kreb's cycle
