Ten years ago, the ratio of birds to snakes in a local desert ecosystem was 2: 5. over the last 10 years, disease and hunting by humans has cut the bird population in half. the snake population has not changed. what is the current ratio of birds to snakes in this local ecosystem?
a.
2: 2.5
b.
2: 5
c.
1: 5
d.
1: 2