Biogeochemical Cycles Flashcards

1
Q

Biogeochemical cycles can be classed as gaseous

A

Reservior is the air or ocean (N, O2, C, H2O)

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2
Q

Biogeochemical Cycle can be classed as sedimentary

A

Reservior is Earth’s Crust (Fe Ca P S)

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3
Q

It is a nature’s way of recycling carbon atoms

A

Carbon Cycle

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4
Q

It is the foundation for all life on earth

A

Carbon

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5
Q

It helps to regulate the earth’s temperature that makes all life possible

A

Carbon

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6
Q

Key ingredient in the food that sustain us

A

Carbon

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7
Q

Provides major source of the energy to fuel pur global economy

A

Carbon

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8
Q

It is the term for carbon captured by the world’s ocean and coastal ecosystems

A

Blue carbon

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9
Q

Steps of Phosphorus Cycle

A

Weathering
Absorption by Plants and Animals
Return of Phosporus Back to Ecosystem by Decomposition

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10
Q

As weathering of rocks takes place by the action of

A

Rain or by acid-producing bacteria

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11
Q

Phosphorus carried down the mountains and slopes with the help of

A

Water

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12
Q

It also result in the release of phosphorus from the inside of the Earth of the Soil

A

Natural Landforms (Volcanoes)

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13
Q

The phosphorus in the weathering step is

A

Inorganic form

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14
Q

The inorganic phosphorus present in the soil is

A

Consumed by the plants

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15
Q

Get the required phosphorous frok the bottom of the oceans - deposited in the form of sediments in the soil

A

Aquatic Plants

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16
Q

the inorganic phosphorous is then converted to organic phosphorus

A

makes up their DNA

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17
Q

Help in the release of oxygen from the soil to the plants

A

Symbiotic organisms

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18
Q

It is used for the formation of biomolecules and bones

A

Phosphorous in Animals

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19
Q

Plants and animals die, the organic phosphorus is again converted to inorganic phosphorus

A

Return of phosphorous Back to Ecosystem by Decomposition

20
Q

Carried out by specific bacteria, converts atm nitrogen into ammonia or ammonium

A

Nitrogen Fixation

21
Q

Involves the decomposition of organic matter by bacteria releasing ammonium ions back into the soil

A

Ammonification

22
Q

bacteria converts to nitrite and then nitrite into nitrate

A

Nitrification

23
Q

Plants incorporate these nitrogen compounds into amino acids amd proteins

A

Assimilatiob

24
Q

Performed by bacteria in low oxygen environments, converts nitrates back into atm nitrogen

A

Denitrification

25
Q

They possess the enzyme nitrogenase whuch can break the strong triple bond of atm nitrogen and covert it into ammonia

A

Nitrogen Fixing bacteria (Genera Rhizobium)

26
Q

Types of Nitrogen Fixation

A
  1. ATM
  2. INDUSTRIAL
  3. BIOLOGICAL
27
Q

Lighgtning energy breaks the nitrogen into nitrogen oxide

A

Atm Fixation

28
Q

Nh3 is formed fron the direct combination of N and H

A

Industrial Nitrogen Fixation

29
Q

Nitrogen in the air is not directly taken by plants

A

Biological Nitrogen Fixation

30
Q

When plants anf animals die and when waste products decompose, organic N compounsa are released

A

Ammonification

31
Q

Break down nitrogen organic matetials and convert them into NH3

A

Decomposer microorganisms

32
Q

2 steps in Nitrification

A

Ammonium Oxidation
Nitrite Oxidatiob

33
Q

Plants take up ammonium and nitrate ions from the soil through their root

A

Assimilation

34
Q

Process by which nitrate ions are converted back into nitrogen gas

A

Denitrificatiob

35
Q

Denitrifying bacteria

A

Pseudomonas anf Paracoccus

36
Q

Difference between Marine and terrestrial Nitrogen Cycla is that Marince Cycle

A

Marine bacteria and archea

37
Q

The main source of nitrogen in marine ecosystem

A

Sediment Rocks

38
Q

continous and natural process that circulate water

A

Hydrologic Cycle

39
Q

Water from liquid to gas

A

Evaporation

40
Q

Solid water directly to gas

A

Sublimation

41
Q

Gas to liquid

A

Condensation

42
Q

The temperature at which the condensation occurs

A

Dew point

43
Q

Temp rises above 0 °C the vapors condense into water droplets

A

Precipitation

44
Q

Rainwater is absorvbed into the ground

A

Infiltration

45
Q

If rainwaters does not create acquifuers

A

Runoff