The answer is that it occurs when minerals absorb into water
and expand. Hydration is a term used to show that a substance contains water.
Hydration enthalpy, energy unconstrained from water reactions. Also it is known
compound produced by combining a substance chemically with water. Many minerals
and crystalline substances are hydrates.
There's four stages in the classical demographic transition model:
Stage 1 - Pre-transition
In this stage, the birth rates are very high, but also the life expectancy is very low, thus the growth of the population is slow.
Stage 2 - Early transition
In this stage, the birth rates are very high, but the life expectancy is increased, so the population grows rapidly.
Stage 3 - Late transition
In this stage, the birth rates decline slightly, and the life expectancy is a bit higher, thus the population growth is slowing down.
Stage 4 - Post-transition
In this stage, the birth rates are declined significantly, the life expectancy is pretty high, so the population is either growing very slowly, or it is declining.
Answer: watersheds, wetlands, forest, and vegetation
Explanation:
The answer is b. a common currency
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Answer:
A. merchants from the Maya civilization.
Explanation:
