placas tectónicas

La teoría de que la superficie de la Tierra está dividida en una cantidad de placas que se mueven cada una en relación con la otra. Algunas de estas placas dan soporte a los ...

tectónica de placas

علم الآثار; التطور

The theory that the surface of Earth is made of a number of plates, which have moved throughout geological time to create the present-day positions of the continents. Plate ...

núcleo del átomo

بيولوجيا; بيولوجيا الخلايا

An atom's core; contains protons and one or more neutrons (except hydrogen, which has no neutrons).

número atómico

بيولوجيا; بيولوجيا الخلايا

The number of protons in the nucleus of an atom.

asma

بيولوجيا; بيولوجيا الخلايا

A respiratory disorder caused by allergies that constrict the bronchioles by inducing spasms in the muscles surrounding the lungs, by causing the bronchioles to swell, or by ...

ascomicetos

بيولوجيا; بيولوجيا الخلايا

Division of fungi that contains the yeasts and morels; ascomycetes produce an ascus (or sac) in which ascospores are produced.

selección artificial

بيولوجيا; بيولوجيا الخلايا

The process in which breeders choose the variants to be used to produce succeeding generations.

reproducción asexual

بيولوجيا; بيولوجيا الخلايا

A method of reproduction in which genetically identical offspring are produced from a single parent; occurs by many mechanisms, including fission, budding, and fragmentation.