How Does it Work? - Nitrogen Cycle

Neil explores the nitrogen cycle, highlighting its crucial role in ecosystems. He learns about nitrogen's inert nature and its conversion into usable forms through processes like nitrogen fixation, nitrification, assimilation, ammonification, and denitrification. These processes involve bacteria, plants, and animals, ensuring nitrogen's continuous cycle from the atmosphere to the soil and back. Neil gains a deeper appreciation for nature's balance and recycling efforts.

What is the primary reason atmospheric nitrogen is not directly usable by most living organisms?

• It is too abundant.

• It is inert due to a strong triple bond.

• It is too reactive.

• It is only found in the ocean.

Which process involves soil bacteria converting ammonia into nitrites and then nitrates?

• Denitrification

• Nitrification

• Nitrogen fixation

• Assimilation

How do plants primarily obtain nitrogen?

• Through photosynthesis

• By absorbing nitrates from the soil

• Through their leaves

• By consuming other plants

What is the process called when decomposer bacteria break down proteins into ammonia?

• Nitrification

• Denitrification

• Ammonification

• Assimilation

Which process returns nitrogen gas to the atmosphere, completing the nitrogen cycle?

• Assimilation

• Denitrification

• Ammonification

• Nitrogen fixation