Answer:
The mechanisms used to produce sound vary from one family of cetaceans to another. Marine mammals, such as whales, dolphins, and porpoises, are much more dependent on sound for communication and sensation than are land mammals, because other senses are of limited effectiveness in water. Sight is less effective for marine mammals because of the particulate way in which the ocean scatters light. Smell is also limited, as molecules diffuse more slowly in water than in air, which makes smelling less effective. However, the speed of sound is roughly four times greater in water than in the atmosphere at sea level. As sea mammals are so dependent on hearing to communicate and feed, environmentalists and cetologists are concerned that they are being harmed by the increased ambient noise in the world's oceans caused by ships, sonar and marine seismic surveys.[2]
Answer: Your answer would be “the local school board”
Good luck hun!
Explanation:
Answer:
sparknotes and shmoop can
trust me
they help me pass english
Explanation:
Answer:
an opportunity to learn how to improve his study habits.
Explanation:
Life is no easy matter, oftentimes it can present us with mishaps and even failures hard to accept; however, it is wise to learn from these experiences rather than allowing to be defeated by them, or even laying the blame on circumstances or other people. For this reason, as one learns from these experiences, it is important to stay motivated to secure better outcomes in the future and avoid deception once again; the best way to do this is to learn from one´s mistakes as one proposes ways to fix these mistakes.
The author's main purpose for including the description of Myra and her brother is to show that Myra how being responsible for her brother impacts on her ability to have friends. Instead of playing on the field at recess, she sits in the neutral zone with her brother. As a result, she is teased by the girls in her class. After a while, Myra becomes sick and ends up in the hospital. After that, all the girls in her class suddenly care about her and visit her.
