GROUP 4

What is the lowest part of the atmosphere?

• mesosphere

• stratosphere

• troposphere

• thermosphere

 It is mostly made up of oxygen and hydrogen atoms.

•  thermosphere

• stratosphere

• troposphere

  exosphere

• exosphere

The series of event in which nitrogen, flows between living and non-living entities such as atmosphere, soil, water, plants, animals and microbes.

• nitrogen cycle

  water cycle

   carbon cycle

  oxygen cycle

• water cycle

   carbon cycle

  oxygen cycle

•  carbon cycle

• oxygen cycle

It can break down organic materials in soils, causing decomposition.

• microorganisms

• bacteria

• fungi

• microbes

During this stage nitrogen passes from the atmosphere to the soil

• Nitrogen fixation

• Mineralization

• Immobilization

• Nitrification

Converts nitrites to nitrates

• Nitrosomonas Nitrobacter

• Nitrobacter

Microorganisms convert nitrates to atmospheric nitrogen in a process of

• Nitrogen fixation

• Mineralization

• Denitrification

• Nitrification

must change form in order to proceed through various stage of cycle

• Nitrogen

• Hydrogen

• Oxygen

greeenhouse gas that absorb heat in the atmosphere

• nitrogen monoxide

• carbon dioxide

• carbon monoxide

• Nitric oxide

 It is the elements that make up the majority of the atmosphere’s composition.

• oxygen and nitrogen

• oxygen and carbon dioxide

• nitrogen and methane

• both a and b