pasagot po please grade 6 science
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pasagot po please grade 6 science
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1. Ecosystem is a biological community of interacting organisms and their physical environment. The examples of ecosystem are: Deserts.
Forests.
Large marine ecosystems.
Marine ecosystems.
Old-growth forests.
Rainforests.
Tundra.
Coral reefs.
2. Rainforest is a luxuriant, dense forest rich in biodiversity, found typically in tropical areas with consistently heavy rainfall. It is called lungs of the earth because they generally draw in carbon dioxide and breathe out oxygen. But the amount of carbon dioxide they absorb, or produce, varies hugely with year-to-year variations in the climate
3. Most rainforests are structured in four layers: emergent, canopy, understory, and forest floor. Each layer has unique characteristics based on differing levels of water, sunlight, and air circulation.
4. A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. ... Most reefs grow best in warm, shallow, clear, sunny and agitated water. Under the sea or ocean. It is important because protect coastlines from storms and erosion, provide jobs for local communities, and offer opportunities for recreation. They are also are a source of food and new medicines. Over half a billion people depend on reefs for food, income, and protection.
5. The three main types of coral reefs are fringing, barrier, and atoll.