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Se muestran los artículos pertenecientes a Enero de 2014.


02/01/2014 22:37 miprimerzarzablog #. FESTIVALS No hay comentarios. Comentar.

What is an Ecosystem?

An ecosystem includes all of the living things (plants, animals and organisms) in a given area, interacting with each other, and also with their non-living environments (weather, earth, sun, soil, climate, atmosphere). 
meaning of ecosystems
In an ecosystem, each organism has its’ own niche, or role to play.

Consider a small puddle at the back of your home. In it, you may find all sorts of living things, from microorganisms, to insects and plants. These may depend on non-living things like water, sunlight, turbulence in the puddle, temperature, atmospheric pressure and even nutrients in the water for life. ecosystem kids

This very complex, wonderful interaction of living things and their environment, has been the foundations of energy flow and recycle of carbon and nitrogen.

Anytime a ‘stranger’ (living thing(s) or external factor such as rise in temperature) is introduced to an ecosystem, it can be disastrous to that ecosystem. This is because the new organism (or factor) can distort the natural balance of the interaction and potentially harm or destroy the ecosystem.
Usually, biotic members of an ecosystem, together with their abiotics factors depend on each other. This means the absence of one member, or one abiotic factor can affect all parties of the ecosystem. 

Unfortunately ecosystems have been disrupted, and even destroyed by natural disasters such as fires, floods, storms and volcanic eruptions. Human activities have also contributed to the disturbance of many ecosystems and biomes. 

More on ecosystem

14/01/2014 13:18 miprimerzarzablog #. SOCIAL AND NATURAL SCIENCE No hay comentarios. Comentar.

ECOSYSTEMS - Elements & Types

Didn’t you have time to finish copying the charts in class???

Click HERE to copy or print them.

ECOSYSTEMS - Questions

  1. What are the elements of an ecosystem?

  2. What things form part of the biotope?

  3. What things form part of the biocoenosis?

  4. What is the difference between a population and a community?

  5. Explain the difference between intraspecific and interspecific relationships. Give examples.

  6. Which are the trophic levels in a trophic relationship?

  7. What organisms are producers?

  8. What type of organisms feed on secondary consumers?

  9. What do decomposers do in an ecosystem?

  10. What is the difference between a food chain and a food web?

  11. What type of ecosystem is a garden in the city?

  12. What is water salinity?

  13. What are the most important environmental factors in terrestrial ecosystems?

  14. What are the six main types of terrestrial ecosystems.

  15. Where are the largest wetlands in Europe?

  16. Where does pollution come from?

  17. What can happen when plant species disappear?

  18. After a fire, what can happen to the soil in the forest?

  19. Human disrespect for nature can cause ecological problems. Which are the most serious ones?

  20. Define sustainable development and name some of the changes we can make.

22/01/2014 09:27 miprimerzarzablog #. SOCIAL AND NATURAL SCIENCE No hay comentarios. Comentar.



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