Could you imagine going from the warm sunny beaches of Florida to the harsh winters of Antartica? It would take some serious adaptions to be able to survive in such drastic changes. Anglerfish and polar bears have made some pretty sufficient adaptions that allows them to be where they are today. If these organisms were not capable to make such vital changes they would not be here today. The anglerfish are some harsh and scary fish, but they do what they need to survive. Anglerfish are gray to dark brown with some large heads and mouths. They range from eight inches to three feet. They can weigh up to 100 pounds! They have a fishing pole like object protruding out of it 's head. This body part is called the illicium. Attached to it …show more content…
Polar bears have made some of the most extreme adaptions. Polar bears originated from brown bears. It is obvious that polar bears made massive evolutionary changes to be able to survive in the harsh artic conditions. To me, the most valuable changes polar bears have made is their furry coat. Just think about it, the artic can get to below 50 degrees. You would need some serious protection to stay warm. The layer closest to their bears skin retains heat to keep the bear nice and toasty. The outside layer repels the severe snow and weather. What you think is hair is actually hollow tubes that trap air and reflect light which gives polar beares that icy look. Another great adaption is the bears coat is water repellent. So after taking a dip in the water, the bears just shake of the water. Underneath all that hair is actually black skin that absorbs heat from the sun. Those adaptions are what keeps the polar bear species alive today. These bears hunt for their food and use the freezing water to get to some of their prey. To assist with swimming, they have a four inch layer of blubber that lets them stay bouyont. Along with their huge bodies, these carnivores have long powerful claws that grip the ice. When swimming, they have webbed feet to assist in swimming. These intriguing mammals live solitary lives. The most communication that happens is with the female and her cubs. One amazing ability polar bears developed is being able to slow down their metabolic rate when
Have you ever wondered why particularly in Alaska, bears need to stock up on food before winter comes? all the bears particularly in Alaska, need to stock up on food before winter comes because when winter hits food goes away. In the text it states " When the cold Alaskan winter hits, the bears’ food supply disappears. Temperatures drop, freezing the streams where tasty salmon swim. The berries that the bears snack on vanishes".
The amount of arctic sea ice is declining more than ever. Polar bears are being greatly affected by the decreases in sea ice. (Doc A) This is affecting their diet because without enough sea ice it has been very difficult for them to catch seals to eat. Also, their population is decreasing due to the longer periods between hunts.
The bear is an extremely diverse creature that has been around for a very long time. We see them portrayed in many ways, from a fierce predator to be feared to a cuddly stuffed animal friend. Here is part one of our list of interesting facts about bears. Number Fifteen: We Can Determine Their Age Through Their Teeth The most reliable method for determining the age of a bear is to look at a cross section of its tooth root through a microscope lens.
It has also been proposed that this change happened quickly, likely because the extreme conditions forced them to adapt and change many aspects of them, including their physical appearance and their diet that would eventually affect other mammals surviving on the same species. "It's a schoolbook example of evolution," says Eske Willerslev, an evolutionary geneticist at the University of Copenhagen who assisted as lead in the research. Brown bears and polar bears still to this day are genetically closely related, they are even able to interbreed. Recent research has begun using genetic information to gain more knowledge on the species relationship and evolution from one another. Overtime, the polar bear has evolved from the brown bear by changing its fur colour from a common brown to a white, this is ideal as it allows the bear to camouflage and prey.
Climate Change This quote said by Washington State Governor, Jay Inslee shows the severity of climate change “We are the first generation to feel the sting of climate change, and we are the last generation that can do something about it.” “On Earth human activities are changing the natural greenhouse of the Earth.” (A blanket around the Earth). Burning fossil fuels is causing carbon dioxide to be released into the air.
This essay will be discussing how bears prepare themselves for the hard times of their life and why. Once the winter months start to roll around food gets scarce and it is hard for them to eat so instead of staying awake and starve themselves, they hibernate. In order to prepare themselves for this difficult time of year, the bears must create a safe shelter, gain a few extra pounds, and drink almost three times the amount of water as usual. Black bears are located all throughout the United States and they all have different ways of preparation depending on their environment. (Reference.com)
This implies that they cannot survive without the ice. The dependence of the large mammals on the frozen floating homes, especially for the rapid access of ringed seals, indicates their survival and breeding probabilities are based on the sea ice conditions. Due to their remarkable degree of specific adaptations to life on the frozen Arctic ocean, the bears are very successful. As a result of this, the polar bears are more vulnerable to the effect of climate change.(Fitzgerald, Kevin T (2013).
They use the ice to rest on while hunting for seals, but since there is less ice it’s causing the polar bears to drown from exhaustion. Walruses can eat up to 200 pounds of clams each day. Clams are usually found near the continental shelf but with ice caps melting it is getting harder for walruses to find
Introduction: Due to moving the arctic snow fox to the tropical rainforest, the snow fox will experience tremendous amount of evolutionary impact. So due to speciation, the formation of a new species due to evolution, it will be called a Forest Fox. The Arctic Snow Foxes environment is very frigid. They feed on the weakest of animals, and even feed of of the leftovers of other animals like polar bears. One of its predators is a polar bear, but because of its white fur, it is very hard to spot.
One of the main reasons polar bears are going extinct is because they aren’t getting the right amount of food they need to survive. Seals, the main food source for the polar bears, are animals that depend largely on the algae that grows on the ice of the Arctic. With the ice content slowly depleting, there isn’t enough seals to sustain the polar bear population. One of the
Climate change, specifically warmer temperatures, has extensively altered these habitats by reducing sea ice extent, thus affecting polar bears since they use it as a platform to travel, hunt, and rest. Changes in the timing of sea ice formation and break up limits the amount of time bears can feed off of seals during late and early summer, hence limiting the amount of fat they are able to store for later seasons. Lower rates of food intake and storage correlates to low reproductive rates, and since females do not have sufficient fat and mass required for successful parturition, they abstain from
There are 3 types of polar bears: ones with thick coats, ones with thin coats and ones with medium coats. It is fall, soon to be winter. The temperatures are dropping rapidly and the bears must be kept warm, or they will freeze to death. Many of the bears have had 2 cubs each but due to the extreme temperatures, many mothers only have one cub left. a. What bear will natural selection select AGAINST?