Water in biology and ecosystems

All living things, humans, plants and animals, depend on water to sustain life. Water has a number of critical biological and ecosystem functions.

This key concept investigates the many functions of water in biology from cells to ecosystems including:

  • Plant and animal uptake of nutrients and minerals in water
  • Water to assist in regulating earth temperature
  • Water to help with biological transport functions
  • Presence of water as a large part of the make-up of cells and total mass of animals
  • Chemical and physical properties of water
  • Water as a habitat for both fresh and salt water plants and animals
  • Adaption of plants and animals to the availability of water in the environment, for example the ability of camels and baobab trees to store water for dry periods.
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