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Agriculture allowed people to stay in one place, and increased food production caused the population density to expand far beyond levels that could be sustained by hunting and gathering alone. This growth in population density provided a critical mass of people to sustain and spread contagious infectious diseases.
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Studying geography creates a global citizen. Those who know geography better understand the interdependence of our world and how we are connected through location, place, movement, region, and human-environment interactions.
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Answer:
2x+9 when x equals 3 is 2*3+9
=15
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Answer:
Higher temperature increases the speed of solubility
Explanation:
"Solubility" refers to the ability of a solute to be dissolved in a solvent. Solubility and temperature are <em>directly proportional</em>. This means that <em>as the temperature increases, the solubility of a substance increases too</em>. In the same manner, <em>as the temperature decreases, the solubility of a substance decreases too.</em>
High temperature produces<u> high heat (increase kinetic energy) that triggers the solvent to break the solutes apart.</u> This is mostly true for many solid-state solutions.
Um I can't answer cause I don't know what the problem is
