Why might animals have vestigial structures?

First dropdown options: a. runoff b. condensation c. evaporation second dropdown options: a. photosynthesis b. transpiration c. sweating third dropdown options: a. raindrops b. clouds c. animals

What is an example of a scientific question that galileo could not have answered with out this new tool?

An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (naturally) wavy hair. if an individual with wavy hair mates with an individual with straight hair, what is the probability that their child will have curly hair? an individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (naturally) wavy hair. if an individual with wavy hair mates with an individual with straight hair, what is the probability that their child will have curly hair? 50% 75% 0% 25%