The lecturer and the reading passage offer two theories to explain why the sea otter population is in rapid decline. The two theories are predation theory and pollution theory. The professor argues predation is the more likely cause than pollution because of the absence of dead sea otters washing up on shores. However, the reading passage attributes the decline of the sea otters population based on evidence of increased ocean contaminates leading to greater vulnerability to infections.
The author states that the pollution hypothesis seemed the most likely cause of otters decline along the Alaskan coast and provides three reasons. In contrast, the professor states that the ongiong investigation show that the predation theory is mst likely the cause of the decline and sh.e opposes each of the author 's reasons
AP Environmental Science: Chapter 5 1. Explain how southern sea otters act as a keystone species in kelp beds. The otters help to keep sea urchins and other kelp-eating species from depleting highly productive and rapidly growing kelp forests, which provide habitats for a number of species in offshore coastal waters. Without southern sea otters, sea urchins would probably destroy the kelp forests and much of the rich biodiversity associated with them.
The article states that there is a rapid decline in the population of sea otters, the mammals found along the coast of California to Alaska. The article claims that the reason for the declination is because of environmental pollution and provides two reasons of support. However, the speaker refutes that the dwindling is due to predation.
The monk seals are a rare tropical animal that lives on the Caribbean and the Hawaiian Islands. Monk seals live in warm waters and spend about two-thirds of their time at sea. However, they also spend time on land as they breed and carry-out their “pups.” Coral reefs provide the seal as a great habitat for them to dive, swim, and for food such as fish. It may seem that monk seals spend most of their time at sea, but they also love to rest on shore on the beaches. From resting and birthing to nursing newborn seals, the seals try their best to survive. Why are these animals extinct, then?
Well, most of this secret lays in their feet. They have long toes with fringes of skin in between them that unfurl in water, this creates a air bubble that prevents them from sinking. However, they have to pull their feet up before the air bubble sinks and gravity pulls them down. Strong bones was usually a good thing, but these lizards have evolved hollow bones that prevent them from sinking. Some of the secret also lies within their tail, while running they hold their tail in the air to counterbalance their upright posture and to reduce drag.
Seal Hunting Sealing hunting has been around for as long as europeans have lived on the North American Continent. Seal hunting has been performed in Canada for as long as anyone can remember, it as since then became a tradition of many canadians. As of lately there are many people all around the continent that are concerned about the effects of seal hunting. The Prime Minster added in a debate on tweet saying “Let them do what they want they really arent doing anything wrong, plus they guns.
The ocean is a giant body of water that is home to all types of fish. The ocean provides a rich environment for a plethora of animals from the tiniest of fish to the enormous whale. In the ocean, these creatures live and explore. Some of them must hunt other fish in order to survive, which means that others must try to avoid predators. Nature has provided all of these animals with a unique capability to survive.
The first one consisted of soft under-fur of beaver that the strands of which had tiny barbs that produced the felt to stay flat and thin. The second one consisted of hair in the beaver’s pelt were rough and long, they were known as the guard hairs. The guard hairs played a vital role in assuring the North Americans not just in catching the beaver but by taking it pelts away. The beaver that had its guard
Beaver marshes where otters, mink, muskrats and ducks could nest,” Bring back a predator that we took away in the first place had a huge positive effect on the land and animals around it. Having the top predators is the best way to go, they were placed on the earth for a reason and who are we to take that away. In conclusion, if we continue to kill of animals as we are doing now, the next 10 years will change horrifically. As Anthony Froude says, “Wild animals never kill for sport. Man is the only one to whom the torture and death of his fellow creatures is amusing in
Leatherback sea turtles, like in the Eastern Pacific along the coast of South America, are another endangered species that has suffered from the effects of poaching. Their meat and eggs are considered a delicacy in some countries. In other areas of the world, the turtles are hunted for different reasons. Jewelry, instruments, wall hangings, and ceremonial objects can be made from the turtle's skin and shells. Based on what happened to the rhino population, you are probably able to guess the effect on the sea turtles.
Animals in Their New Natural Habitat Why are different species becoming extinct? Do researchers know how many innocent animals are killed each year? When will animals be protected in a comfortable habitat? In man-made environments, such as zoos and other nature parks, animals that are born in the wild are protected and well taken care of. Due to animals running around in the wild, scientists and researchers can track the amount of animals being killed everyday.