Two tuning forks were found in a box. One of them has a stamp on it that says "659E". That stamp indicates that the tuning fork will vibrate 659 times per second when struck. The second tuning fork has no stamp on it. A musician takes a slow motion video of the second tuning fork after striking it and counts the number of times it moves back and forth. She calculates 813 repeated back and forth motions in one second for the tuning fork. What claim can the musician make about the tuning fork with no stamp on it? * The second tuning fork produces a higher pitch sound than the first tuning fork. The second tuning fork produces the same pitch sound as the first tuning fork. The second tuning fork produces a lower pitch sound than the first tuning fork.

Many bird species build nests in which they raise their offspring. one of these species is known as the magnolia warbler. breeding pairs of magnolia warblers build nests out of pieces of grass and twigs. the female warbler will then lay her eggs in the nest and sit on the eggs for a few weeks until they hatch. after the offspring have hatched, the female will continue to sit on the newborn chicks to keep them warm. both the male and the female bring food for the offspring to eat until the young are mature enough to find food on their own. which of these most likely describes why birds such as the magnolia warbler build nests in which to raise their offspring? a. nest building decreases the amount of energy used by the parent birds to raise their offspring to adulthood. b. nest building increases the probability that the offspring will survive and eventually produce offspring of their own. c. nest building decreases the amount of food that the offspring require the adult birds to provide. d. nest building increases the probability of the offspring being located by airborne predators.