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Life on Earth IV Video Lecture | Crash Course for Class 6
FAQs on Life on Earth IV Video Lecture - Crash Course for Class 6
| 1. What are the different types of ecosystems found on Earth? |  |
Ans.Ecosystems on Earth can be broadly classified into terrestrial and aquatic ecosystems. Terrestrial ecosystems include forests, deserts, grasslands, and tundras. Aquatic ecosystems consist of freshwater ecosystems, such as lakes and rivers, and marine ecosystems like oceans and coral reefs. Each ecosystem supports a unique variety of plants and animals adapted to its environment.
| 2. How do animals adapt to their environment? | |
Ans.Animals adapt to their environment in various ways to survive and thrive. These adaptations can be physical, such as the thick fur of polar bears to keep warm in cold climates, or behavioral, like migratory patterns in birds that allow them to find food and breeding grounds. Adaptations help animals to find food, escape predators, and reproduce successfully in their habitats.
| 3. Why is biodiversity important for life on Earth? | |
Ans.Biodiversity is crucial for maintaining the balance of ecosystems. It ensures natural sustainability for all life forms. A diverse range of species contributes to ecosystem services, such as pollination, water purification, and climate regulation. High biodiversity also provides resilience against environmental changes and diseases, making ecosystems more stable and productive.
| 4. How do plants contribute to the ecosystem? | |
Ans.Plants play a vital role in ecosystems by producing oxygen through photosynthesis and serving as the primary producers in the food chain. They provide food and habitat for various organisms, help in soil formation and stabilization, and contribute to the water cycle. Additionally, plants can filter pollutants and improve air quality, enhancing overall ecosystem health.
| 5. What threats do ecosystems face today? | |
Ans.Ecosystems today face several threats, including habitat destruction due to urbanization and agriculture, pollution from industrial and agricultural activities, climate change affecting temperature and weather patterns, and invasive species disrupting local flora and fauna. These threats can lead to loss of biodiversity and degradation of ecosystem services, highlighting the need for conservation efforts.
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Sep 25, 2025
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