Science Helpdesk

What to Learn

• Why is there Life on Earth.
• Biomes: concept, main types on Earth.
• Ecosystems: concept and components.
• Habitats and ecological niches.
• Land ecosystems: main types and features. The formation of soil.
• Aquatic ecosystems: main types and features.
• Anthropogenic ecosystems: main types and features.
• Feeding interactions: producers, consumers and decomposers; food chains and food webs; trophic pyramids.
• Other biotic interactions: interspecific and intraspecific.
• Major human influences in the ecosystems.

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