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Why do larger animals keep their body heat better than smaller animals?
Wiki User
∙ 12y ago
This is because of the surface to volume ratio. A small mammal has a larger surface area, as compared to its volume, than a large mammal does, so a small mammal's surface area to volume ratio is bigger. A large surface to volume ratio causes things to pass into the organism and out of the organism more easily, so a mammal with a large surface to volume ratio (a small mammal) will lose heat more easily in a cold environment than a mammal with a small surface to volume ratio (a large mammal).
Wiki User
∙ 14y ago
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Why small homeothermic animals like hummingbird restrict to warm climate only?
Smaller animals, like hummingbirds, can't keep their body temperature warm as larger animals because they are so small.
Why are moons always smaller then the planets they orbit?
A smaller body always orbits around a larger body rather than the other way around because the larger body has more gravity
Why smaller mammals often have a higher respiration rate than larger mammals?
this concept states that mammals must expend a significant amount of energy to maintain a constant internal body temperature, animals with larger surface area to volume ratio(smaller mammals) must have higher metabolic rates because they must work harder to maintain that internal temperature. smaller surface area to volume ratio means more heat loss and thus, the more energy it must expend to maintain a constant body temperature. because smaller mammals have larger surface are to volume ratios, they must have higher metabolic rates because they must obtain and expend more energy to maintain the internal body temperature than larger mammals
Why animals liver are bigger than human liver?
Not all animals livers are bigger (compared to body weight) than humans. However, some animals' livers are a larger proportion of the body weight because those animals are carnivores (unlike humans which are omnivores). A possible reason for this is that carnivores must be prepared for large, infrequent meals - so their liver needs to be large to deal with a sudden large intake of fat. Other animals, such as horses and cows, have larger livers simply because they are a much larger animal than a human (and in fact their livers are smaller relative to body weight).
Does a mouse's heart beat slower than an elephant's heart?
Yes. There is a direct correlation between an animals average body size and the speed of its heartbeat with smaller animals having faster heartbeats than larger animals.
What is the term for a body of water larger then a lake and smaller then an ocean with salt water?
A Sea.
What is it called a smaller stream that runs into a larger river?
A stream smaller than a river is known as a creek
Which animal take in more oxygen per breath?
Size does not necessarily govern how much oxygen per gram of body weight a living organism consumes. Many smaller animals are extremely active and use more oxygen per gram of body weight than larger animals.
When the body requires larger and larger doses of a drug to experience the same effect that a smaller dose once produced is?
Drug tolerant
Why do polar animals have smaller noses and ears than animals in warmer climate?
to stay warm/retain body heat.
How the decrease in in body surface area to volume ratio in larger animals on respiratory systems in the evolutionary process of animals?
rapping
Can adipocytes get larger?
Adipocytes do get larger. Actually when animals including humans get fat they do not elevate the number of adipocytes in their body they just have larger adipocytes. Adipocytes do not multiply in an adult body they just get larger or they shrink according to how much fat they store.
