Sperm whales have vestigial hip bones, and a small percentage of sperm whales also have vestigial hind limbs. Which of the following statements best explains the presence of these vestigial structures in sperm whales?
a. Sperm whales evolved from ancestors that walked on land.
b. Sperm whales are in the process of evolving into land mammals.
c. These structures are acquired by each individual sperm whale during its lifetime.
d. These structures resulted from sperm whales having a long period of embryonic development.

Discuss the functions of epithelial connective nerviud and muscular tissues

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.

If garbage is left on the street flies in microbes can arise from nothing to feed on it true or false