The stage in the water cycle where rain or snow falls from the atmosphere to the ground.

The movement of water from surfaces like rivers and streets into larger water bodies, possibly carrying pollutants.

A bacterium found on plants and in precipitation, known both as a plant pathogen and for its use in artificial snow production.

A microbial group found in terrestrial ecosystems that influences infiltration and nutrient cycling in soil.

A microbial group that fixes CO₂ during photosynthesis and contributes significantly to the carbon cycle in aquatic systems.

A biological or technological method of capturing and storing CO₂ to reduce atmospheric carbon levels.

Organisms such as methanogens that produce methane (CH₄) under anaerobic conditions in the carbon cycle.

A _________ organism is most likely to thrive in high heat environment.

What role do cyanobacteria and algae play in the carbon cycle?

Which of the following microorganisms is responsible for reducing sulfate (SO₄²⁻) into hydrogen sulfide (H₂S) in anaerobic environments?

Which microorganism is responsible for microbial sulfur reduction in the diagram?

Which process converts volatile sulfur gases into atmospheric compounds?

What is the biochemical significance of cysteine and methionine in the sulfur cycle as it relates to herbivores?

Which of the following processes links volcanic gas to the formation of sulfuric acid in the atmosphere?

Which of the following is not a major reservoir in the phosphorus cycle?

Which microorganism is known for converting phosphates into soluble forms (PO₄³⁻) in the phosphorus cycle?

Which of the following best describes the role of Aspergillus niger in the phosphorus cycle?

Which term refers to the microbial process of breaking down organic phosphorus compounds into inorganic forms?

In biochemical engineering, struvite precipitation is a technique used for:

Which microorganism forms symbiotic relationships with leguminous plants to fix nitrogen?

What product is formed in the first step of nitrification?

Which bacteria are responsible for converting nitrite into nitrate in the nitrogen cycle?

What is the process by which plants absorb nitrates or ammonium and incorporate them into proteins and nucleic acids?

What happens during ammonification?

Which bacteria are involved in denitrification, converting nitrate back into nitrogen gas?