Answer:
Populations of insects in the area decrease - Decrease
Populations of owls in the area increase - Decrease
Some bats are infected with a fatal fungal disease - Decrease
Bats from a nearby colony immigrate into the population - Increase
Improved food quality allows female bats to have two breeding cycles per year - Increase
Step-by-step explanation:
A population of bats can be affected by numerous factors as to will its population increase or decrease, just as at any other organism. If the populations of their food source decrease, the bats will have less food, thus their numbers will decrease. The same goes is a deadly diseases spreads among them, as many will be infected and will die out. They also have predators, so if some of their predators has increase in its population, the population of bats will go down. On the other hand, if the amount and quality of food is better, and the females are able to breed twice a year instead of once, than the population will grow. If bats from the same species but from another colony move in and join the population, than the population will have rapid increase.