Nitrogen Cycle #5

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including nitrogen gas, ammonia, nitrites, and nitrates, in the environment.

Front

What is eutrophication?

Back

Eutrophication is the process by which water bodies become overly enriched with nutrients, leading to excessive growth of algae and depletion of oxygen.

Front

What causes algal blooms?

Back

Algal blooms are caused by an excess of nutrients, particularly nitrates and phosphates, in water bodies.

Front

What is the role of bacteria in the nitrogen cycle?

Back

Bacteria play a crucial role in the nitrogen cycle by converting nitrogen gas into ammonia (nitrogen fixation) and breaking down organic matter (decomposition), which releases nitrogen back into the environment.

Front

What happens to dissolved oxygen levels during eutrophication?

Back

Dissolved oxygen levels decrease during eutrophication because bacteria consume oxygen while decomposing organic material.

Front

What is the impact of algal blooms on aquatic life?

Back

Algal blooms can harm aquatic life by blocking sunlight, reducing oxygen levels, and producing toxins.

Front

How do excess nutrients enter water bodies?

Back

Excess nutrients can enter water bodies through agricultural runoff, wastewater discharge, and industrial pollution.

Front

What is the significance of nitrates in the nitrogen cycle?

Back

Nitrates are a form of nitrogen that plants can absorb and use for growth, making them essential for plant nutrition.

Front

What is the relationship between population growth and agriculture?

Back

As the population grows, agriculture typically increases to meet the food demand.

Front

What is the process of nitrogen fixation?

Back

Nitrogen fixation is the conversion of nitrogen gas from the atmosphere into ammonia by certain bacteria, making nitrogen available to plants.