Answer:
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Place is one of the five themes of geography that describes the features that make a site unique such as paris, france has the eiffel tower and the arc de triumph. In addition, the five themes of geography are location, place, region, movement and human environment interaction.
20 is the Number of Neutrons of potassium.
Irrigation system gave the ancient civilizations fertile land which helped crops grow. It also allowed for ease of watering which made the process of farming faster.
The disorder allele is recessive
