ecosystems

• Biotic means living components
• Abiotic means non-living components
• Human changes to ecosystems:

  • changing water pH
  • fish stocking
  • altering nutrient levels
• The pond bottom has very little oxygen and light.
• Decomposers feed on dead materials.
• Mid water has fish as the main predators
• The pond surface has plenty of oxygen and light
• Low latitude means high temperature
• High latitude means low temperature
• Low pressure is created when air rises
• High pressure is created when air sinks
• Low pressure is associated with rainfall
• High pressure is associated with dry and warm conditions
• Tundra biomes are found near North and South poles
• Taiga biomes have a cool climate, known for evergreen trees
• Temperate deciduous forests thrive in mild and wet conditions
• Temperate grasslands thrive on mild conditions
• Deserts are found near the tropics of cancer and capricorn
• Savanna grassland have hot and dry conditions