Earth is continuously experiencing change. The question is, how does life react to these changes? In this video, Mr. Saggers will explain how evolution of life has been affected by the Earth’s systems and vice versa. Earth’s systems can be divided into two categories, the non-living systems (atmosphere, hydrosphere, and lithosphere) and living system – the biosphere. These systems are interconnected, which means that changes in one can affect the other. Life overcomes these changes through a process called evolution, which is driven by natural selection. Sometimes, the species that cannot adapt become extinct. Sudden changes in the Earth’s system have also resulted in mass extinctions. The extinction of dinosaurs is a classic example. However, life also induces changes in the Earth’s systems.
This video satisfies the 4-ESS2-1 requirement of fourth-grade science proficiency.
Students who demonstrate understanding can: 4-ESS2-1. Make observations and/or measurements to provide evidence of the effects of weathering or the rate of erosion by water, ice, wind, or vegetation.
