They are important in their ecosystems for pollinating flowers and dispersing seeds; many tropical plants depend entirely on bats for these services. Bats provide humans with some direct benefits, at the cost of some disadvantages.
photography is a way of making a picture using a camera. a person who makes pictures using a camera is called a photographer. a picture made using a camera is called a photograph or photo. most photography in the 20th century was on photographic film and most in the 21st uses digital cameras.