Ecosystems and Biomes Concepts

The video explains biomes as large ecological areas with distinct climates and species. It covers five biomes: desert, grassland, forest, aquatic, and tundra, detailing their characteristics and examples. The concept of ecosystems is introduced, highlighting their role within biomes and the importance of interactions among living and non-living components. The video also discusses the water, carbon, and nitrogen cycles essential for ecosystem functioning. Human impacts on ecosystems, such as pollution and deforestation, are addressed, emphasizing the interconnectedness of biomes and the biosphere.

Which biome is characterized by being hot and dry, covering about one-fifth of Earth's surface?

• Forest

• Desert

• Tundra

• Aquatic

What is the main difference between tropical and temperate grasslands?

• Tropical grasslands have more trees

• Temperate grasslands have higher temperatures

• Tropical grasslands are also known as savannas

• Temperate grasslands receive less rain

Which type of forest is known for trees that lose their leaves?

• Aquatic forest

• Boreal forest

• Temperate forest

• Tropical rainforest

How does an ecosystem differ from a biome?

• An ecosystem is larger than a biome

• A biome is a part of an ecosystem

• An ecosystem is a part of a biome

• They are the same

What is the role of molecules in an ecosystem?

• They form cells

• They are the largest units

• They are not part of ecosystems

• They only exist in water

What is the process called when water changes from a gas back to a liquid?

• Condensation

• Evaporation

• Sublimation

• Precipitation

Which cycle involves the conversion of nitrogen into forms usable by plants and animals?

• Water cycle

• Carbon cycle

• Nitrogen cycle

• Oxygen cycle

What can happen to a species if it cannot adapt to changes in its ecosystem?

• It will thrive

• It may become extinct

• It will migrate

• It will evolve immediately

How do humans impact ecosystems?

• By stabilizing climates

• Through pollution and deforestation

• By increasing biodiversity

• By creating new species

What is the biosphere?

• A large ecosystem

• The top crust of Earth where life exists

• The Earth's core

• A type of biome