AP Environmental Science – Unit 1 Part 1 – STEM4Students


In this unit we’ll be discussing ecosystem. We will begin by covering the basics of environmental
science by addressing the question: what is environmental science? Environmental Science is the interdisciplinary
study of the Earth’s life support systems. But what does that mean? Interdisciplinary means a combination of multiple
fields of study including geology, sociology, and meteorology. Earth’s life support systems include soil
nutrient cycling, soil structure, spatial structure, primary productivity, and evolution. Ecosystems are manifestations of earth’s life
support systems. Ecosystems provide food, water and shelters. They also provide fuel, fiber and chemicals. they also create genetic diversity. Ecosystems regulate climate, disease, and
pollination they also regulate water quality and level. Ecosystems also create cultural and spiritual
identities, as well as recreational and ecotourism identities. They also create inspiration, aesthetics,
and educational opportunities. They also create a sense of place and a cultural
heritage. We study ecosystems in ecology. An important concept in ecology is the four
levels organization. The four levels of organization include the
biosphere, which is all living things on the planet earth. There’s also an ecosystem which is all living
and dead things in a given area. There’s also a community which is all species
interacting with each other in a given area. There’s also a population which is all the
members of a species in a given area. biosphere
ecosystem they’re the first two
then comes community and population too those are the levels
of our planet study them carefully
to go to university Now that you know about the population, we’re
going to focus on habitat and niche. A habitat is where an organism lives, including
the living and nonliving conditions needed to survive. Each species has a range of tolerance, much
like you have a range of tolerance of the temperature of soup you will eat. A niche is an organism’s role in their ecosystem. Generalists have broad niches and will adapt
to many different situations. Specialists have narrow niches and therefore
can easily go extinct.

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