Question

demuestra lo que comprendiste.
a. elige la mejor manera de terminar cada oración.

1. la idea principal de esta lectura es que los ecosistemas del mar caribe

a. están poblados de arrecifes.
b. están contaminados por basura o desechos tóxicos.
c. son buenos lugares para muchas plantas y animales.
d. son buenos lugares para disfrutar de playas con la familia.

1. las especies que viven en los ecosistemas marinos tienen una relación simbiótica entre ellas q

a. les permite vivir juntos en el mismo ambiente.
b. les permite formar playas de diferentes colores y formas.
c. les permite bordear algunas costas que proveen acceso al mar.
d. les sirve de refugio a animales como los peces.

Explanation:

Question 1

To determine the main idea about Caribbean marine ecosystems, we analyze each option:

• Option a: Focuses on reef population, not the main idea of the ecosystem's role or condition.
• Option b: Talks about pollution, which is likely not the main idea unless the text is about pollution (not indicated here).
• Option c: States that these ecosystems are good habitats for many plants and animals, which aligns with the typical main idea of marine ecosystems (providing a home for diverse life).
• Option d: Focuses on human recreation, not the ecosystem's ecological role.

So the best choice is c.

For the symbiotic relationship in marine ecosystems:

• Option a: Symbiosis helps species live together in the same environment (this is a core aspect of symbiotic relationships, as they facilitate co - existence).
• Option b: Symbiosis has no direct relation to forming beaches of different colors and forms.
• Option c: Symbiosis is not about bordering coasts for marine access.
• Option d: While some symbiotic relationships might provide refuge, option a is a more general and accurate description of what symbiosis (mutual or other types) allows - co - living in the environment.

So the best choice is a.

Answer:

c. son buenos lugares para muchas plantas y animales.

Question 2