Hands–On Ecology Grades 2–3最新文献

Hands–On Ecology Grades 2–3 Pub Date : 2021-09-09 DOI: 10.4324/9781003235446-3

Colleen Kessler

{"title":"What is An Ecosystem?","authors":"Colleen Kessler","doi":"10.4324/9781003235446-3","DOIUrl":"https://doi.org/10.4324/9781003235446-3","url":null,"abstract":"Using a Web-based GIS to Teach Problem-based Science In High School and College http://www.foothill.edu/fac/klenkeit/nsf/ What is an ecosystem? An ecosystem is generally defined as a community of organisms living in a particular environment and the physical elements in that environment with which they interact. (http://www.enviroliteracy.org/category.php/3.html) Within each ecosystem, there are habitats which may also vary in size. A habitat is the place where a population lives. A population is a group of living organisms of the same kind living in the same place at the same time. All of the populations interact and form a community. The community of living things interacts with the non-living world around it to form the ecosystem. The habitat must supply the needs of organisms, such as food, water, temperature, oxygen, and minerals. If the population's needs are not met, it will move to a better habitat. Two different populations can not occupy the same niche at the same time, however. So the processes of competition, predation, cooperation, and symbiosis occur. Habitats, then, are specific to a population. Each population has its own habitat. For example, a population of ants has its own habitat. Several populations may share a habitat. For example, in a small pond several aquatic populations may co-exist in the same water at the same time. An aquarium is a good example of a shared habitat. Biomes are ecosystems where several habitats intersect. The Earth itself is one large biome. Smaller biomes include desert, tundra, grasslands, and rainforest. http://www.fi.edu/tfi/units/life/habitat/habitat.html","PeriodicalId":265165,"journal":{"name":"Hands–On Ecology Grades 2–3","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127245769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Local Ecosystem 当地生态系统

Hands–On Ecology Grades 2–3 Pub Date : 2021-09-09 DOI: 10.4324/9781003235446-4

Colleen Kessler

引用次数: 0

Creating a Wildlife Garden 创建野生植物园

Hands–On Ecology Grades 2–3 Pub Date : 2021-09-09 DOI: 10.4324/9781003235446-8

Colleen Kessler

引用次数: 0

Studying Populations 研究人群

Hands–On Ecology Grades 2–3 Pub Date : 2021-09-09 DOI: 10.4324/9781003235446-5

Colleen Kessler

引用次数: 3

Making a Contribution to Conservation 为环境保护作出贡献

Hands–On Ecology Grades 2–3 Pub Date : 2021-09-09 DOI: 10.4324/9781003235446-7

Colleen Kessler

引用次数: 0