Which term defines the distance from the focal point to either a lens or a mirror?
a. the focal length
b. the polar length
c. the fractal length
d. the resonance length

root word, prefixes, and suffixes

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.