•Características de los seres vivos. •Células Procariotas y Eucariotas: similitudes y diferencias.

•Reinos: monera, protista, fungi, plantae y animalia. Características de cada uno, ejemplos de seres vivos que los integran.

•Adaptaciones: definición y ejemplos en relación con el ambiente.

•Reproducción: sexual y asexual. Gametas y fecundación. Polinización.

•Sistema reproductor humano: órganos y función. Métodos anticonceptivos y de prevención de enfermedades.​

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.