Effects of Decomposers and Deforestation

The video tutorial covers the carbon cycle, emphasizing its role in maintaining ecosystem balance. It includes a simulation to track carbon movement, highlighting the impact of decomposers. The tutorial also examines deforestation's effect on carbon dioxide levels, using evidence to analyze claims about photosynthesis and cellular respiration. The lesson concludes with a discussion on how to improve biodome experiments and the importance of understanding carbon dynamics.

What is the primary reason the total amount of carbon in an ecosystem remains constant?

• Carbon cycles through different parts of the ecosystem.

• Carbon is continuously created in the atmosphere.

• Carbon is absorbed by the soil permanently.

• Carbon is destroyed during photosynthesis.

In the biodome simulation, what happens to the carbon in the atmosphere when decomposers are removed?

• It increases significantly.

• It is converted into oxygen.

• It remains unchanged.

• It decreases as carbon accumulates in dead matter.

Why did the decomposer population decline in the biodome?

• They were removed manually from the ecosystem.

• They were exposed to too much sunlight.

• They lacked resources due to deep burial of dead matter.

• They were overfed with organic material.

What role do worms play in supporting decomposers in an ecosystem?

• Worms produce oxygen for decomposers.

• Worms prevent the growth of harmful bacteria.

• Worms break down dead matter into smaller pieces.

• Worms consume decomposers as food.

What is the immediate effect of burying dead matter on the biodome's ecosystem?

• Increased photosynthesis rate.

• Decreased energy storage in living organisms.

• Increased oxygen levels.

• Decreased water availability.

How does the removal of decomposers affect cellular respiration in the biodome?

• It converts cellular respiration into photosynthesis.

• It has no effect on cellular respiration.

• It decreases cellular respiration.

• It increases cellular respiration.

What is one major consequence of deforestation on carbon dioxide levels in the atmosphere?

• No change in carbon dioxide levels.

• Decreased carbon dioxide levels.

• Increased photosynthesis.

• Increased carbon dioxide levels.

Why does less photosynthesis occur after deforestation?

• There are fewer trees to absorb carbon dioxide.

• The soil becomes too dry for plant growth.

• The temperature becomes too cold for photosynthesis.

• Animals consume all the plants.

How does increased cellular respiration contribute to higher carbon dioxide levels?

• It converts carbon dioxide into water.

• It releases more carbon dioxide as a by-product.

• It reduces the amount of oxygen available.

• It absorbs more carbon dioxide from the air.

What is a potential solution to mitigate the effects of deforestation on carbon dioxide levels?

• Reducing the amount of sunlight in the area.

• Increasing the number of decomposers.

• Planting more trees to increase photosynthesis.

• Increasing the use of fossil fuels.