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Types of pyramids

The first pyramid I going to explain is the biomass piramid  is a graphical representation designed to show the biomass or biomass productivity at each trophic level in a given ecosystem.

The second pyramid is the energy piramid. An energy pyramid is the graphical representation of the trophic levels (nutritional) by which the incoming solar energy is transferred into an ecosystem.

This information was taken from diferrent webs loked in


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The Iberian Lynx

Lynx have short tails and characteristic tufts of black hair on the tip of their ears.They have a ruff under the neck, which has black bars (not very visible), resembling a bow tie.

The Iberian lynx critically endangered species native IberianPeninsula   in Southern Europe. It is the most endangered cat species in the world. According to the conservation group SOS Lynx, if this species died out, it would be the first feline extinction since the Smilodon  10,000 years ago.

This information was looked in

File:Lynx pardinus.png

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In ecology, predation describes biological interaction where a predator  feeds on its prey. Predators may or may not kill their prey prior to feeding on them, but the act of predation always results in the death of its prey and the eventual absorption of the prey’s tissue through consumption. It can often be difficult to separate our various types of feeding behaviors.

The key characteristic of predation however is the predator’s direct impact on the prey population. On the other hand, detritivores simply eat dead organic material arising from the decay of dead individuals and have no direct impact on the “donor” organism.

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Fossils are the preserved remains or traces of organisms. Also fossils are evidence of past life and fossils are an evidence of evolution.

The fossil record:  Show us organisms that have evolved in a historical sequence. The age is determined by Relative dating or Radiometric dating. But fossils records have problems the more important are that fossils form by chance, quality of fossils varies, fossils reconstruction requires thorough knowledge of anatomy and dating of fossils is achieved through various methods

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Fossils are the preserved remains or traces of animals plants and other organisms from the remote past.

There are different type of fossils:

TRACE FOSSILS: are the remains of trackways, burrows, bioerosion, eggs and eggshells, nests, droppings and other types of impressions.

RESSIN FOSSILS: is a natural polymer found in many types of strata throughout the world, even the artic.             PSEUDOFOSSILS: are visual patterns in rocks that are produced by naturally occurring geologic processes rather than biologic processes.

LIVING FOSSILS:  is an informal term used for any living species that is apparently identical or closely resembles a species previously known only from fossils that is, it is as if the ancient fossil had “come to life.”

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what phase is it?



Orogeny is the mountain formation. Refers to forces and events leading to a severe structural deformation of the Earth’s crust.

There are two types of orogeny:

-Alpine orogeny: (occur in alps) is an orogenic phase in the late mesozoic and tertiary that formed the mountains ranged of the Alpide belt

-Andean orogeny: (occur in ands) Tectonic forces above the subduction zone along the entire west coast of South America where the Nazca Plate and a part of the Antartic Plate are sliding beneath the South American Plate continue to produce an ongoing orogenic event.


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