If the object distance in the following picture were 8.0 m and the image distance were 2.0 m, what is the focal length? Answer options: 0.63m or 1.6m

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?

Which of the following list the divisions of the geologic time scale in order from longest to shortest

What practical value did astronomy offer to ancient civilizations?