Answer:
its called a membrane
Explanation:
its kind of like a cell wall
Resource? Idk what this question is
Answer:
Symbiosis is a close relationship between two species in which at least one species benefits. For the other species, the relationship may be positive, negative, or neutral. There are three basic types of symbiosis: mutualism, commensalism, and parasitism! Hope this helps! you can simplify this answer!
Explanation:
The snail would release Carbon Dioxide like humans do.
