What is an approximate size of the zebrafish embryo ( hatch) in millimeter. Objective lens used: Scanner lens

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.

Moving down the ramp from 6 meters to

Which type of stimulus do mechanoreceptors detect? sound pain heat light