Biosphere Lecture
Atmosphere, hydrosphere, & lithosphere.
In this guide we examine how specific parts of the biosphere relate to life on Earth.
Video Overview
We will begin with this guide overview video.
On every video with voice, select the closed captioning “cc” option if you would like to see the text.
Biosphere Lecture Guide Contents
This guide and corresponding lecture material are assessed on the weekly quiz.
Biosphere Objectives
Atmosphere
Describe the basic composition of Earth’s atmosphere, including how atmospheric gases relate to ozone depletion and acid rain; and explain the greenhouse effect including how it relates to Earth’s climate.
Hydrosphere
Describe what a biogeochemical cycle is, providing examples of these nutrient cycles including sinks and the role of organisms; list key properties of the water molecule that make it significant for life as we know it; and describe ways water relates to the structures and distribution of plants.
Lithosphere
Explain the significance of bacteria in the nitrogen cycle; and describe impacts on terrestrial ecosystems, including wind and soil erosion.
Climate & Biomes
Explain how sunlight distribution leads to varied ecosystems at different latitudes; and describe the impact of topography, including altitude, north vs. south-facing slopes, and east vs. west-facing slopes on Oregon habitats.
