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:
It's tough to be the youngest.
Explanation:
The infinitive form of a verb is the verb in its basic form. It is most times started with 'to', and then the base verb follows. It could also simply just be the verb in it's base form. A gerund is the -ing form of a verb. So, in the sentence above, the gerund is 'being'.
Therefore, to convert this sentence to the infinitive form, the gerund, 'being' will be converted to its base form, -be. When 'to' is attached to it, it becomes the infinitive, -to be.
Answer:
two, “twice, double. Hope this helped.
Explanation:
