Tarea

Páginas: 2 (273 palabras) Publicado: 10 de octubre de 2011
PRISMAS BASÁLTICOS

category | Natural Monument |
Political location | A 34 km from Pachuca, Hidalgo. |
Geographical location (longitude, latitude and altitude) | North latitude20 ° 12'10 "West Latitude 98 ° 34'55" Altitude 2100 |
Surface
  | 363.61 km2 |
Date of decree
 . | 1770 and 1780. |
Institution running (federal, state or municipal) |  Federal. |
Objectives of its creation | Book your beautiful landscape. |
Infrastructure | Paved road. The road is paved Huasca inward |
Recreation | Horseback riding, boat, fishing. |Issue | The lack of transport. |
Ecosystem type
  |   Mixed Forest. |
Flora
  | Oak and Pine. |
Fauna
  | Fox, cacomichtle, vulture, squirrel and rabbit. |

ARRECIFALVERACRUZANO
Veracruz Reef System consists of 17 reefs of which 11 are located in front of Anton Lizardo and the rest in front of the Port of Veracruz in the municipalities ofVeracruz, Boca del Río and Alvarado. Its area is 52.238 ha. This system is one of the most important in Mexico because of its size and the number of species, as well as by the variety of coralswhich, in turn, allow the establishment of shellfish such as clams, snails and slugs polychaete worms and annelids, among others, echinoderms such as starfish, sea urchins andbiscuits. In addition there are a number of fish and crustaceans such as shrimps and lobsters.

Although the reef system is a constantly changing environment of natural causes, there is clearevidence of human impact, which combined with natural hazards, reduce the recovery of the reefs. Many of the threats from the dense coastal populations. Since the sixteenth century theVeracruz Reef System has been intensely affected by human activities, mainly the extraction of coral for construction, overfishing and pollution, more recently, crafts and aquarium.
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