Answers

2014-10-17T18:30:20+08:00
Because snakes eat frogs that's why population of frogs might decrease than the population of snakes :)) hope this may help. ^_^
0
The population of frogs decreases because snakes eats frogs but the frogs doesn't eat snakes ,so the number of frogs decreases
2014-10-19T08:20:30+08:00
 the larger the area the larger the population
if there are many frogs and snake species the birth rate will increase.
and the one causes is the frog eaten by a snake.

0