1. Con sus palabras diga las diferencias entre ecosistemas, población y comunidad y de ejemplos de cada uno.
2. Cuál es la diferencia entre un ecólogo y un ecologista.
3. Nombre los factores bióticos y los factores abióticos.
4. Que relaciones existen entre los miembros de un ecosistema (competencias y
cooperación), de cada uno explicar y dar un ejemplo. (nombra mas tipos de
relaciones fuera de las que están en la presentación de p. p.)

In 1933 the 21st amendment was added to the u. s. constitution, allowing for the manfacture, transportation, and sale of alacoholic beverages in the united states. why was this amendment needed?

Which of the following is an example of a policy that may be implemented by a business that has trouble with employees using the internet for their own personal needs? a. all employees will have to take a safety training class. b. employees caught using the internet for personal needs will have to take a professional development class. c. personal interviews will be conducted to find out who is using the internet for personal needs. d. employees will be monitored, but nothing will happen if their employer catches them using the internet for personal needs.

The kind of wood most often used in contemporary furniture is