The rise of the first civilizations occurred after the__,when the climate began
ID: 154200 • Letter: T
Question
The rise of the first civilizations occurred after the__,when the climate began to Last Glacial Maximum; cool Last Glacial Maximum Younger Dryas; warnm Younger Dryas; cool warm C. QUESTION 12 Identify an example of a positive feedback loop A. Increasing CO2 results in warming that causes increased evaporation and water vapor, which results in more extreme rainfall events. ls. increasing CO2 results in warming that creates more clouds, which increases Earth's albedo and reduces the warming. C. Increasing CO2 results in warming that creates more clouds, which increases Earth's albedo and results in more snow and ice. Increased CO2 causes positive effects on plants through increased rates of photosynthesis. Increasing CO2 results in warming that causes increased evaporation and water vapor, which further D. E. increases the warming.Explanation / Answer
Answer 11: Last Glacial Maximum, warm.
Explanation : The first civilization appeared in locations where the geography was favorable enough to intensive agriculture, specifically in and around the major river valleys, where the fertile floodplains contained rich, healthy soil and the rivers provided irrigation facility for crops and a means of transportation as the advent of civilization depends on the ability of some agricultural settlements to consistently produce surplus food.
Answer 12 : Increased CO2 causes positive effects on plants through increased rates of photosynthesis.
Explanation : CO2 is a major ingredient during photosynthesis and because large sections of tropical forest are being lost due to excessive warming and drying of regions such as in Amazonia, the overall capacity of plants to sequester atmospheric CO2 is reduced. As a result, the terrestrial biosphere which is currently a carbon sink, would become a carbon source.
Answer 13 : Temperature; Precipitation.
Explanation : As trees are sensitive to the local climate conditions of an area such as temperature and rainfall, they give us information about that area’s past local climate. For example, tree rings usually grow wider in wet and warm years and they are thinner in years when it is cold and dry. If the tree has experienced stressful conditions, such as during droughts, the tree hardly grows at all in those years.
Answer 14 : the total area of land and water required to provide the resources we consume and absorb the waste we generate.
Explanation : Our ecological footprint is basically the impact of an individual person or a community on the environment. It measures the amount of productive land and area needed to produce the resouces consumed.
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