Biogeochemical Cycles

Front

What is a biogeochemical cycle?

Back

A biogeochemical cycle is the movement of elements and compounds through living organisms and the physical environment, involving biological, geological, and chemical processes.

Front

What are the main components of the carbon cycle?

Back

The main components of the carbon cycle include photosynthesis, respiration, decomposition, and combustion.

Front

Which nutrient is not cycled through the atmosphere?

Back

Phosphorous.

Front

What is the only process that removes carbon from the atmosphere?

Back

Photosynthesis.

Front

What are greenhouse gases?

Back

Greenhouse gases are gases that trap heat in the Earth's atmosphere, contributing to global warming.

Front

Why do living things need nitrogen?

Back

Living things need nitrogen to make proteins and amino acids.

Front

What role do decomposers play in biogeochemical cycles?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and making them available for plants.

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including fixation, nitrification, and denitrification.

Front

How does human activity impact the carbon cycle?

Back

Human activities, such as burning fossil fuels and deforestation, increase carbon dioxide levels in the atmosphere, disrupting the natural carbon cycle.

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.