HUMAN REPRODUCTION

Changes during puberty:

The male reproductive system:

The female reproductive system:

Fertilisation. The formation of a new individual:

The ovarian and uterine cycles:

Embryonic development:

Comentarios

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 ...

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 ...

The blood flow

Humans have double and complete circulatory system. The blood runs through two circuits: the pulmonary circuit and the sistemic circuit.

BIOLOGÍA Y GEOLOGÍA - BIOLOGY AND GEOLOGY

Buscar este blog