Question

Plants are eaten by grasshoppers, which are eaten by mice, which are eaten by snakes.

Answer 1

If the Grasshoppers go missing, then the mice will lose their food source and eventually die. Which means the snakes will also lose their food source, which is mice. 

Answer 2

Answer: The population of mice and snakes will also reduce and plants population will increase.

Explanation:

Plants are producers that synthesize food by the help of the process known as photosynthesis. This process provides food to grass hoppers.

Grasshoppers are eaten by mice and mice is eaten by snakes. If the grasshoppers will be removed from the ecosystem then rest all the other organisms will be decreased in number.

Plants will increase in number as there will be no grasshopper to feed on them.