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Saddleback College *

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Anthropology

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Oct 30, 2023

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Uploaded by BarristerDragonMaster889

Were Dinosaurs Warm-Blooded or Cold-Blooded? Dinosaurs have always presented many mysteries to paleontologists. One of the most puzzing has been their body temperature. Warm-blooded animals like mammals and birds produce heat within their body to maintain a constant body temperature and get heat from their envionment. But what about dinosaurs? ln order to find out, scientists decided to look at metabolism. Warm-blooded animals have fast metabolisms that allow for a faster growth rate, more brainpower, and quicker movements. Cold-blooded animals lack these traits but are more econnmical with energy and food;that is, they can sustain themselves for long periods of time with very little food. lnterestingly, studies of fossils showed that dinosaurs had a combination of these characteristics. They could regulate their body heat like mammals, although they could not do it continually. Scientists believe this unique in-between stage gave dinosaurs an ecological advantage. They would have been smarter and fater than reptiles. However, dinosaurs would not have required as much food as similar - sized mammals to maintain these characteristics. ln short, dinosaurs were truly in a category of their own. li is no wonder that we remain fascinated by these long-gone creatures. 1. Which of the sentsnces below best expresses essential information in the highlighted sentence in the passage? 답 : Dinosaurs could not always control their body temperature like mammals. 2. Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? 답 : To preserve certain traits. dinoaurs needed less food than mammals. How Alaska Became the 49th State Alaska is the 49th and largest state in the US. It is a region filed with beauty and abundant natural resources. Around 5 percent of the area is coverd in glaciers,

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