Why bat does not get any
crushes as if fly at dark?

When bats are paying attention to their sonar signals, they can navigate without crashing into things. They can identify and capture food while it is moving. The echolocation system is designed to locate very small insects. ... Unlike nocturnal bats, they have well-developed eyes and poorly developed echolocation.

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

force tends to be low and long diustance masses are high