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:
weathering
Explanation:
it first weathers then it can erode then be deposited
Answer is: flyby spacecraft.
Flyby spacecraft is spacecraft designed to approach planets but not be captured by their orbit or land. Flyby <span>spacecraft spends no more than a few hours near the planet and observes only a small area. Some flyby are: Pioneer, Mariner 4, Cassini.</span>