So, first of all let me explain the process of hydration to you.
The water causes the hardening of concrete through a process called hydration. Hydration is a chemical reaction in which the major compounds in cement form chemical bonds with water molecules and become hydrates or hydration products.
Considering this information, the answer is D.
Answer:
continental rise
Explanation:
In nearly all instances, it ends at its seaward edge with an abrupt drop called the shelf break. Below this lies the continental slope, a much steeper zone that usually merges with a section of the ocean floor called the continental rise at a depth of roughly 4,000 to 5,000 metres
What you're looking for in here is the hardness: a material can scratch another material if it's harder than it.
So the desired material cannot be harder than amphibole, which has a hardness of 6.
But it has to be harder than fluorite, which has a hardness of 4.
So we're looking for a hardness of between 4 and 6 and from the table we see it's magnesite (we'll need a hard magesite) - this is the correct answer!
The first one would be D, 88 degrees. Since it is a kite, you can add an angle bisector down the middle (vertically) to get 2 triangles. The 60 angle becomes 30 because you are cutting it in half, and angle S is 106 because the horizonal agles are the same. All of the angles in a triangle add up to 180, so you can find the missing angle in one of the triangles. 30 + 106 = 136. 180 - 136 = 44. 44 × 2, since you are now finding the angle of the kite and not just one triangle. 44 × 2 = 88. I apologize if this explanation is confusing, I didn't really know how to explain it.
Answer:
The reason that logging is so bad for the climate is that when trees are felled they release the carbon they are storing into the atmosphere, where it mingles with greenhouse gases from other sources and contributes to global warming accordingly.
Explanation:
