Ir al contenido principal

INVERTEBRATES

  • Insects:
Respiratory system of insects: insects exchange gasses through tracheae, very thin tubes which originate at openings in the body called spiracles and extend throughout the body. 



Etiquetas:

Comentarios

Publicar un comentario

Entradas populares de este blog

1º ESO B y C. Unit 7: Ecosystems and biodiversity.

Study plan: Semana del 23 de marzo Sesión 1          Contenidos de las páginas 110 y 111.           Actividades de la página 111. Sesión 2              Contenidos de las páginas 112 y 113.       Actividades de la página 112. Sesión 3              Contenidos de las páginas 114 y 115.                     Actividad 1 de la página 114. Semana del 30 de marzo Sesión 1           Contenidos de las páginas 116 y 117.        Actividades 1, 2, 3, 4 y 6 de la página 117. Sesión 2       Contenidos de las páginas 118 y 119.       Actividades 1, 2 y 3 de ...
Publicar un comentario
Leer más

4º ESO. Unit 7: Matter and energy in ecosystems.

Study plan:  Week 1: Day 1  Explanation of pages 118 and 119 of the book.  A trophic level consist of all the organisms in an ecosystem which feed in the same way. These are: Producers. Consumers. Decomposers.  Whatch these videos about trophic levels and their relationships in an ecosystem: trophic chains and trophic networks.    Later on watching the videos above do the activities of page 119 in your notebook. Day 2  Pages 120 and 121 of the book. Transfer of matter and energy in ecosystems. Main ideas: MATTER flows in an ecosystem in a closed circuit. 1º) Plants and other photosynthetic organisms capture the sun's energy and use it to synthesize energy-rich molecules (mainly sugars). These organisms are called PRODUCERS . 2º) The organisms that consume the producers (called CONSUMERS ) derive energy and materials from breaking down the producers’ molecules, use them to ...
Publicar un comentario
Leer más

The blood flow

Humans have double and complete circulatory system.  The blood runs through two circuits: the pulmonary circuit and the sistemic circuit. 
Publicar un comentario
Leer más