Answer:
The fraction of species that are not venomous to the total number of snakes is 0.78
Explanation:
Total number of species of snakes in the world = 2,700
Total number of venomous species of snakes in the world = 600
So subtracting the number of venomous species from number of species of snakes will give the number of non venomous species.
Hence,

The fraction of species that are not venomous is,

Putting the values,
