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Life sciences Grade 10. CAPS: structured, clear, practical. Helping teachers unlock the power of NCS. KNOWLEDGE AREA: Diversity, change and continuity Topic 12: History of life on Earth. Mass extinction. CAPS SPECIFIC AIMS. Knowing Life Sciences. Investigating Phenomena in Life Sciences.
explain all the losses of species at a particular mass extinction event (not just specific losses e.g. dinosaurs). explain why some organisms died and others survived. be based on natural events and processes that are shown to have occurred around the time of extinction.
Mass extinction occurs when 40 % or more of the living plant and animal species become extinct within a short period. Mass extinctions occur on a world-wide scale, and there have been several mass extinctions in the history of the Earth.
5 lip 2024 · 1. Define mass extinction and identify the main mass extinction events in Earth’s history. 2. Understand the causes and effects of these mass extinctions. 3. Explain the impact of mass extinctions on biodiversity. 4. Describe how scientists study past mass extinctions. 5. Connect past mass extinctions to potential future risks. Vocabulary: 1.
concept. Human activities have caused a mass extinction of species, which threatens the rich biodiversity on Earth. objectives. Students will be able to: • Read and respond to questions from an article and chart on mass extinction. • Describe the geologic history of extinction and past causes.
In this lesson, students will learn about the causes of the “Big 5” mass extinctions that have occurred throughout Earth’s history and the efects on biodiversity over time. Student objectives: Students will be able to: List the five major extinction events in Earth’s history.
Each mass extinction results in the loss of about _________ of all species in existence across the entire Earth over a “short” geological period of time. Given the vast amount of time since life first evolved on the planet, “short” is defined as anything less than _________ million years.
