Science Chapter 1
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Includes all of the interacting parts of a biological community and its environment.
Interactios between biotc and abiotc things in an enviorment
An ecosystem that is capeable of withstanding pressure and giving support to a variety of organisms.
A stable and healthy ecosystem.
- Living/formerly living (once living) parts of an ecosystem.
- e.g. plants animals microorgansims
- Non living parts of the ecosystem that biotic things need to ensure survival.
- e.g. water, oxygen, sunlight, soil, nutrients
- Hard part of earths surface.
- e.g. rocks and soil
- Liquid part of earths surface.
- e.g. oceans, lakes, rivers
Layer of gases above earths surface. Includes air
Living part of earths surface, not separate from other abiotc spheres, includes life in soil,water, and air.
All living things on earth
Abiotic chemicals that are cycled through earths spheres which are used by biotc organisims to survive.
Energy needed to survive
- Adding nitrogen or phosphorus to an ecosystem that pushes it beyond the normal nutrient cycle and beyond sustainability.
- To much fertilizer makes algae bloom and theres less sunlight for plants under water. Less oxygen in ocean, and fish die.
- Conversion of solar energy to chemical energy which is then used as food.
- used by primary producers such as plants
- carbondioxide and water in sunlight makes glucose and oxygen
- Catagories of organismis decided by how it gains its energy.
- e.g. primary producers: plants
- primary consumers: organisms that eat plants, insect
- secondary consumers: bird eats insect
- tertiary consumers: Top of food chain carnivores
Mass of living organismis in a defined group or area
- Amount of energy passed on through the trophic levels.
- Always less then 100%
- 10% passed on through each trophic level.
- When materials espcially toxins are injest by an organisim at greater rate then they are eliminated.
- Man made toxins can endanger a species
Concentration increase of toxins as they move there way through the trophic levals.
- The process in which organismis consume oxygen and produce carbon dioxide.
- occours under aerobic conditions (when oxygen is present)
- When bacteria and fungi relese energy in glucose.
- Occours in anaerobic conditions (oxygen is not present)
- Traps the suns rays in the atmosphere resultng in a warmer temperture capeable of sustaining life.
- e.g. water vapour, carbon dioxide, methane
Increase of global warming caused by burning fossil fuels like coal, petroleum, and natural gas resluting in a increse in carbon dioxide in the atmosphere.
Fossil fuels are burnt, nitorgen oxide and sulfur dioxide is released into atmosphere, which then combine with water particals to form nitric acid and sulfuric acid, which then descends as acid precipitation as rain sleet or snow.
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