What happens to the number of prey when the number of ladybirds is increased in Case Study 1?

well if the number of say Rabbits increased, its would eventually mean there would be less food for them to eat so unless they venture out to other areas for food, they will not survive.

less food will also mean that there is less chance of reproduction as the parents would not be able to support themselves and their young.

also if the rabbits eat the food available will mean less food for other animals.

ultimately an increase in Rabbits (prey) will mean more food for the foxes (predator) to eat, then they can reproduce as they can support the cubs.

this will mean therefore the number of rabbits will decrease, and as the number of rabbits decrease, so will the number of foxes....and the cycle continues

hope this helps