Mechanical

  Electromagnetic

  Chemical

  Heat

Primary producer

  Primary consumer

  Secondary consumer

  Tertiary consumer

Enhanced absorption of water

  Better survival of root diseases

  Enhanced uptake of nitrogen

  Enhanced soil structure

Temperate deciduous forest [di-SIJ-oo-uhs]

  Tundra

  Taiga

  Grasslands

salt is an ionic molecule and causes a charge differential

  salt causes an osmotic imbalance leading to excessive loss of water from cells

  salt usually is contaminated with toxic heavy metals

  salt causes heavy metal poisons to be readily absorbed through skin

Plants are not able to grow in the cold temperatures

  High wind speeds remove the nutrients needed by plants

  There is little sunlight to provide the initial energy

  There are few top predators, so little energy is needed

It does not involve animals

  It is very short

  It only occurs in rocks or soils

  It does not significantly involve the atmosphere

Parasite

  Epiphyte [EP-uh-fyt]

  Lycophyte [LY-kuh-fyt]

  Saprophyte [SAP-ruh-fyt]

Ecosystem

  Niche

  Biome

  Food pyramid

Omnivores

  Detritivores (read as: di-TRI-ti-vohrs)

  Scavengers

  Predators