A student creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two smal
l aquatic plants. The next day, all the snails are dead. Which action would have been most likely to keep the snails alive? A. Adding more plants
B. Adding nitrogen
C. Adding more water
D. Adding another animal species
No one cares how smart you are and the questions you ask why would ask this on a good website for answers when your so smart you can ask good questions but not answer it.
