The video explores the differences between natural and artificial ecosystems. Natural ecosystems are complex, diverse, and self-sustaining, with indigenous components interacting through nutrient and energy cycles. In contrast, artificial ecosystems are human-made, simpler, and require external inputs to function. They have lower genetic diversity and simpler food webs. The video also highlights differences in time scales for processes like water cycling, with natural ecosystems taking much longer. Overall, natural ecosystems are more complex and variable, while artificial ones are simpler and designed for high productivity.

What is a key characteristic of natural ecosystems?

• They are primarily man-made.

• They rely on external resource inputs.

• They have high genetic diversity and complex food webs.

• They are simple and easy to control.

Which of the following is an example of an artificial ecosystem?

• A rainforest

• A coral reef

• A farm

• A mountain range

How many components do artificial ecosystems typically have?

• Over 100

• Between 5 and 10

• Less than 3

• More than 50

Why do artificial ecosystems require additional resources?

• They have high genetic diversity.

• They have complete nutrient recycling.

• They are naturally sustainable.

• They have incomplete nutrient recycling.

What is a major difference in the water cycle between natural and artificial ecosystems?

• Natural ecosystems have a faster water cycle.

• Artificial ecosystems have a longer water cycle.

• Natural ecosystems have a water cycle that takes decades or centuries.

• Artificial ecosystems do not have a water cycle.