Ecosystem Interactions and Dynamics in Nature

The video tutorial explains the concepts of population, community, and ecosystem. It describes how populations of the same species form communities, and how these communities interact with non-living elements to create ecosystems. The tutorial further explores the dynamics of ecosystems, focusing on the cycling of nutrients and energy. Nutrient cycling involves the decomposition and recycling of elements, while energy cycling involves the conversion of sunlight into chemical energy by plants, which is then transferred through the food chain and eventually lost as heat.

What is a population in ecological terms?

• A group of the same species living together

• A single organism

• A collection of ecosystems

• A group of different species living together

What forms a community in an ecosystem?

• A single population

• Multiple populations of different species

• Non-living elements

• A single species

What does an ecosystem include?

• Only non-living things

• Only living things

• Only plants and animals

• Both living and non-living things

What is the term for non-living components in an ecosystem?

• Abiotic

• Biotic

• Organic

• Inorganic

What is one of the main processes in ecosystem dynamics?

• Cycling of oxygen

• Cycling of water

• Cycling of carbon

• Cycling of nutrients

How do plants capture energy from the sun?

• As chemical energy

• As heat energy

• As light energy

• As kinetic energy

What happens to the energy released by organisms?

• It is stored in the soil

• It is lost as heat through the atmosphere

• It is absorbed by water

• It is converted back to light energy