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- Sat Nov 10, 2012 11:44 am
- Forum: General Discussion
- Topic: BMR of Rat is higher than an an Elephant
- Replies: 2
- Views: 6919
Generally, within a similar group of animals, for example, mammals, metabolic rate is higher for smaller body size versus larger body size. You have to take into consideration the mass (body size) of the animal though. that is why its called the mass specific metabolic rate (MSMR). For your example,...
Natural selection is probably one of the primary driving forces of evolution, but all the other mechanisms that you mentioned are also very important. it is difficult to say what is the most important driving force since i think that is situational. correct me if i am wrong, but natural selection is...