IB ESS（Environmental Systems and Societies）是IB科目中的环境系统和社会课程，课程主要了解生态系统和生物群落、生物多样性和濒危物种以及人口等内容，从实验室工作和实验室练习到实地考察，再到IB ESS调查和研究，ESS提供了各种各样的调查机会。

IB环境系统和社会是一门非常流行和实用的课程。它将提供大量关于环境问题、主题以及与环境和社会相关的潜在解决方案的知识。但是，在众多的主题中选择一个IA话题并不容易。

留求艺留学老师在IB课程内部评估写作方面有多年的经验，可以处理环境研究和社会中最复杂的话题。今天，老师也为大家分享了一些IB ESS IA选题，如果你还没有想法，可以看看能不能找到灵感。

30个IB ESS IA选题推荐——高分终极清单！

1、Cans spray substances into the air have an impact on the ozone layer?

罐头喷射到空气中的物质对臭氧层有影响吗?

2、What kind of relationship exists between the amount of CO2 emitted and the life expectancy rate in France?

在法国，二氧化碳排放量和预期寿命之间存在什么样的关系?

3、How much do different age groups in Mexico City's population influence people's perspectives on environmental issues?

墨西哥城不同年龄段的人口对人们对环境问题的看法有多大影响?

4、What kind of influence does the use of well water have on the development of Ocimum basilicum?

井水的使用对龙舌兰的发展有什么影响?

5、Is there a significant connection between the amount of CO2 released into the atmosphere and the death rate brought on by respiratory diseases in Buenos Aires?

在布宜诺斯艾利斯，排放到大气中的二氧化碳量与呼吸系统疾病造成的死亡率之间是否有重大联系?

6、How much of an impact does the proximity of a highway have on the development of lichen?

靠近高速公路对地衣的发育有多大的影响?

7、How much of an impact does the quality of the water in Green Lake have on the fluoride levels in the ground water within a range of two kilometers?

绿湖的水质对两公里范围内地下水中的氟化物含量有多大影响?

8、Find out why people's perspectives on global issues vary so much from one another and what causes these differences

找出为什么人们对全球问题的看法差异如此之大，以及造成这些差异的原因

9、Take your pick of an environment and look at the process of succession there. You can use your sampling abilities to infer whether or not the observed changes can be attributable to succession by comparing your results with published information on the species that are typical for the region.

选择一个环境，看看那里的继承过程。您可以使用您的采样能力，通过比较您的结果与发表的关于该地区典型物种的信息，来推断观察到的变化是否可归因于演替。

10、Create a research plan for a certain soil-related topic, such as soil compaction, soil conditioners, wind-dampening methods, or cultivation strategies.

为特定的土壤相关主题制定研究计划，如土壤压实、土壤调节剂、风湿方法或栽培策略。

11、Examine how two or more environments differ in their levels of biodiversity.

研究两个或两个以上的环境在生物多样性水平上的差异。

12、Create a study that will examine a factor that is preventing a certain organism from flourishing

创建一项研究，检查阻止某种有机体繁荣的因素

13、Find out what influences how well the Lincoln index predicts things.

找出影响林肯指数预测效果的因素。

14、Create a plan and conduct an inquiry on what causes sediment load in runoff.

制定一个计划，并进行调查，是什么导致了径流中的泥沙负荷。

15、Take one variable that affects Elodea photosynthetic rates and examine its impact.

取一个影响Elodea光合速率的变量，研究它的影响。

16、Examine whether or if a certain environment, like mangroves, displays zonation patterns.

检查某些环境，如红树林，是否显示分区模式。

17、Discover how the productivity of an ecosystem varies throughout its many habitats.

发现一个生态系统的生产力如何在其不同的栖息地变化。

18、How the effects of wildfires contribute to climate change

野火是如何影响气候变化的

19、The impact of pesticide usage on the variety of species

农药使用对物种多样性的影响

20、Influence exerted by the United States Desert bighorn sheep impeded in their movement by the border wall.

美国沙漠大角羊的影响被边境墙阻碍了它们的移动。

21、The effects of acid rain on the development and germination of plants

酸雨对植物发育和萌发的影响

22、The slowing down of plants' rates of growth due to salinization

盐渍化:由于盐渍化而使植物生长速度减慢

23、The pace at which biodegradable polymers break down in the environment

生物可降解聚合物在环境中分解的速度

24、The proportion of a person's ecological footprint that is attributable to their level of income

一个人的收入水平在生态足迹中所占的比例

25、The impact of carbon emissions and acid rain on the level of economic growth

碳排放和酸雨对经济增长水平的影响

26、The influence of agricultural fertilizer on the abundance and variety of stream macro-invertebrates in the Danube River

农业肥料对多瑙河大型无脊椎动物数量和种类的影响

27、How much of an impact does proximity to a forest have on the biodiversity of the surrounding soil?

靠近森林对周围土壤的生物多样性有多大影响?

28、How much of an impact does doing dishes in the sink have on the amount of water used?

在水槽里洗碗对用水量有多大影响?

29、What difference exists between the ages of people living in Huston who recycle, and what factors contribute to this discrepancy?

居住在休斯敦的回收者的年龄之间有什么差异?是什么因素导致了这种差异?

30、How significant is the impact of agriculture on the many ecosystems of the Danube River in Germany?

农业对德国多瑙河生态系统的影响有多大?

【微语】用知识的海洋为伴，让旅途充满无尽的可能。祝福你留学生活一帆风顺。