Biosphere L3-L5 Flashcards

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1
Q

What are the 4 properties of water?

A
  1. Universal solvent
  2. Relativley high boiling point and melting point
  3. Adhesive and cohesive properties
  4. High heat capacity
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2
Q

Earth is a closed system with respect to what?

A

Matter

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3
Q

What are the 4 reservoirs that nutrients move through?

A
  • living organisms and recently dead
  • atmosphere, soil and water
  • fossilized remains
  • minerals in rocks
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4
Q

How can excess nutrients cause issues?

A

Can lead to low levels of oxygen dissolved in water (severe algal growth blocks light that is needed for plants)

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5
Q

What are the factors in productivity?

A
  • Number of producers
  • Heat/light
  • Rainfall
  • Nutrients/light
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6
Q

What is productivity?

A

The rate at which an ecosystem’s producers capture and store energy over time

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7
Q

What are some factors of slow cycling?

A
  • Allows for efficient use and recycling of energy (no waste)
  • Helps maintain overall balance of ecosystems
  • involves the production of fossil fuels
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8
Q

What are some factors of rapid cycling?

A
  • Caused by human disturbances and activity
  • Not as effective and disrupts the natural cycles
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9
Q

What are the different processes of the nitrogen cycle?

A
  • Nitrogen Fixation
  • Nitrification
  • Assimilation
  • Ammonification
  • Denitrification
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10
Q

What does the phosphorus cycle do?

A

Keeps producers in balance (does not cycle through atmosphere)

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11
Q

What are the 4 processes of the Carbon & Oxygen cycle?

A
  • Photosynthesis
  • cellular respiration
  • Combustion
  • Decomposition
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12
Q

Why do plants need sulphur?

A
  • Essential for the synthesis of amino acids and proteins
  • Involved in the production of vitamins, enzymes, and coenzymes
  • Plays a role in cellular signaling and maintaining cell membranes
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