It is ideal to focus on the primary causes of climate change with the aim of understanding the influence or implication on the growth and development of the planet earth. This paper seeks to unveil the major or primary causes in relation toclimate change. This is through evaluation of natural...
在开展科研工作和撰写学术论文时,了解一手文献(primary source)与二手文献(secondary source)之间的区别非常重要。 —手文献是关于某个事件或现象的原始的、第一手的资料,而二手文献是一手文献之外的其他资料,例如分析或诠释—手文献的书籍或文...
Rick Spinrad, NOAA's administrator, said the addition of the Arctic tundra as a source of carbon dioxide emissions "will worsen climate change impacts." Local ecosystems are already having to adapt. According to the report, food sources for ice seal populations are shifting due to water tem...
EPA chief claims carbon dioxide is not a primary contributor to climate change, despite scientific consensusRafi Letzter
在开展科研工作和撰写学术论文时,了解一手文献(primary source)与二手文献(secondary source)之间的区别非常重要。 —手文献是关于某个事件或现象的原始的、第一手的资料,而二手文献是一手文献之外的其他资料,例如分析或诠释—手文献的书籍或文章。 今天小MA解释一手文献与二手文献之间的区别,并举例帮助读者理解在学术论...
在开展科研工作和撰写学术论文时,了解一次文献(primary source)与二次文献(secondary source)之间的区别非常重要。一次文献是关于某个事件或现象的原始的、第一手的资料,而二次文献是一次文献之外的其他资料,例如分析或诠释一次文献的书籍或文章。本文解释一次文献与二次文献之间的区别,并举例帮助读者理解在学术论文中使...
在学术研究和论文写作中，了解一次文献（primary source）和二次文献（secondary source）的区别至关重要。一次文献，如原始报告或事件记录，提供第一手信息，是研究的基础；二次文献则是对一次文献的分析、解释或评论，如书籍和文章。使用它们时，一次文献用于支持观点，二次文献则提供背景和理解框架。例如...
Primary energy sources represent unrefined sources of energy found in nature such as crude oil or biomass and energy carriers the “compounds” in the fuel that carries the energy, while the fuel is an energy carrier associated with a specific primary energy source and processing option. To ...
His country’s primary source of income, agriculture, was threatened by desertification and climate change. 作为阿富汗主要收入来源的农业受到荒漠化和气候变化的威胁。 UN-2 The following are the primary sources of data and information used in the present report 本报告所用数据和资料主要来自以下方...
Before∼70 kyr ago, charcoal peaks in the Cape Pasley record are associated with high values for Myrtaceous elements (Fig. 2;Supplementary Fig. 4), indicating that sclerophyll forests were the principal source of fuel for fires. After∼70 kyr ago, lower and more stable values for charcoa...