Module 2 Homework Assignment
If a dinosaur is warm-blooded they would be considered an endotherm. A cold-blooded dinosaur would be an ectotherm. An endotherm animal is able to make their own body heat. An ectotherm’s body heat is reliant upon outside sources. Being an endotherm or an ectotherm has significant influence on how an animal lives, grows and evolves. Because an animal’s body heat affects their metabolism it therefore directly effects how quickly the animal grows and is able to reproduce. (www.livescience.com/21215-dinosaur-bones-warm-blooded.html) The increase in the Earth’s temperature could have a real effect on the size that animals eventually grow to. When an animal warms up they accelerate through their life stages as a more rapid pace. This is due to putting on mass quicker when an animal is at a warmer temperature. As a result of putting mass on quicker and accelerating through the life stages quicker the animal eventually reaches a smaller adult size. (Wynne, 2011) For a cold-blooded dinosaur they would face major challenges as the earth’s temperature rose. They would eventually become a smaller species both physically and possibly in numbers. For cold-blooded animal the smaller animals usually have less offspring. You could conclude then that as dinosaurs decreased in size it could result in fewer baby dinosaurs. (The pulse of T. rex., 1994) For warm-blooded animals they may not face the challenge of eventually becoming smaller with a rising temperature like the cold-blooded animals but would still face problems. Smaller cold-blooded animals mean’s smaller food for those of us who need these animals for our food supply. (The pulse of T. rex., 1994). Regardless of being cold-blooded or warm-blooded all animals are threatened by climate change. In a report published in February 2004 the GECR reported that by 2050 approximately 25% of the Earth’s animal and plant species will have become extinct due to climate change. A great reason that animals will not be able to survive upcoming climate changes compared to those of the past is migration. Today’s animals face a migration challenge due to the loss of habitat available, fragmentation of habitat, and habitats being stressed by nonnative species to that habitat. (Global warming, wild species, and us., 2005). An example to support the above challenge is that of the white-beaked dolphin. The white-beaked dolphins were once found in the waters off Scotland. During the last few decades the waters off the west coast of Scotland have risen in temperature by 1.5 degree Celsius. A study performed by Aberdeen University, the Scottish Agricultural College in Inverness linked the change in the life of the white-beaked dolphin to the change in the climate. ("Waters Are Too hot for White-beaked Dolphins," 2005) As discussed earlier not only will the cold-blooded animals some animals need for food be smaller but they may migrate and no longer be available in the area. During the last quarter century a majority of the bottom-dwelling fish found in Europe’s North Sea have migrated due to the water temperature warming. These bottom-dwelling fish have left the area for cooler waters found to the north. (Global warming, wild species, and us., 2005). As we have been learning in our textbook and our first discussion board post most species, animal and plant, thrive in a consistent environment. Researchers at Stanford University predict that during the next century our climate will shift at a rate 10 times faster than any climate shift that took place during the past 65,000,000 years. The dramatic shifts in store will present challenges of dynamic size to all animals both cold-blood and warm-blooded. (www.natureworldnews.com)
Global warming, wild species, and us. (2005, 08). Global Environmental Change Report, 17, 1-4. Retrieved from...
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