Which animals are homeothermic?heterothermic? how is this related to their body covering?
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I'm sorry, am I to understand that you are asking us to do your research for you? And that you are in either high school or college and haven't figured out how to research on the net? GO FISH!
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Snakes, like other reptiles, are built around moisture conservation. Most snakes and lizards don't even pee, let alone sweat! They excrete their uric acid in a solid pellet. If they sweated, they would have to top up on moisture, which would be difficult and dangerous for many species. By not having to drink free-standing water, reptiles are able to occupy some of the driest environments on earth. As has been pointed out, most reptiles are what are called "shuttling heliotherms", moving in and out of the sun to maintain a constant body temperature. Sankes, having a large surface area in relation to their mass, tend to heat up more quickly than lizards. They can absorb heat through the ground as well, which is called being "thigmothermic" -which makes one wonder if they get warm by beating up other reptiles they would be "thugmothermic" ;-). \n\nSnakes shed their skin periodically and for a variety of reasons- not only to allow them to grow, but also if they have any sort of parasites. It is only the outermost layer of the skin that is shed, but there is usually a little bit of pigment in the shed skin and this often allows the  pattern, although not the colour of the snake that shed the skin to be ascertained. Humans shed their skin too, we call it dandruff. Most household dust is shed skin of people.
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Many survive the same way reptiles and amphibians do. They hibernate by digging into the mud and burying themselves within. Others are capable of surviving in low-temperature water. The rest migrate like birds.
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Kingdom: Animalia (is an animal)\nPhylum: Chordata (has a notochord at some stage)\nSubphylum: Vertebrata (has a spinal column - backbone)\nClass: Mammalia (is a mammal: warm-blooded, suckles young with milk)
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The fact that female mammals produce milk for their young means that at birth a mammal can have a relatively large brain, although they are relatively helpless.  Other animals have to be able to at least get around.\n\nBrains don't grow as much as other parts of the body, which is why babies seem to have large heads.\n\nThe obvious counter-example is birds, where the young are stuck in the nest and depend on their parents for food.  However, flight puts a limit on how heavy a bird can be, and so how heavy its brain can be.  But flightless birds are a possible candidate.\n\nAmphibians and reptiles are cold-blooded, which seems as though it would rule out our sort of intelligence.  On the other hand, perhaps an intelligent crocodile would think of slowing down when the temperature drops much as we think of sleep.  Remember that a large brain would mean a large egg (and you have to fit the rest of the body inside the egg as well).
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Ok, animal A is the bobcat and animal B is the snake.\nBobcats are endotherms, meaning that they are capable of maintaining their own body temperatures through metabolizing.  Snakes are ectotherms, meaning that they are not capable of doing this, or if they are, it is at a very low degree. Instead, they maintain their body temperatures through environmental influences.
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Yes, they do.  It's called "estrus, but is often referred to as being "in heat", especially when referring to a household pet.
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Well both have feathers.. feathers have many oiles in them which keep water away from the bird. water never comes in contact with the real skin of the bird and with it being warm blooded the bird is able to keep a good body temp.
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Because it's warm-blooded,  has fur, and gives milk.  (Even though it also lays eggs, which is very un-mammalian, scientists just agreed to classify it that way because it's more like a mammal than anything else.)
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Animals capable of temperature regulation within a given range are deemed homeotherms (alternatively homiotherms or homotherms). They have the ability to regulate temperature via negative feedback control.\nTemperature is controlled in a variety of ways in these animals.\nThe hypothalamus acts as a receptor in regulation, by detecting fluctuations in temperature. These receptors are better known as thermoreceptors.\nSkin also possesses thermoreceptors which can detect the temperature of the external environment. This information is relayed to the hypothalamus which can in turn transmit nerve pulses for corrective mechanisms to occur.\nIncreased sweating is a corrective response aimed to reduce the temperature of the organism.\nVasodilation is a corrective response where the blood vessels close to the skin surface become more dilated, meaning their is a larger surface area for heat to be lost of the external environment from the blood vessel carrying over-heated blood.\nVasoconstriction is the opposite of this and occurs when temperatures in an organism drop. The blood vessels become constricted so that minimal heat loss occurs.\nThe hairs on your body also play an important role in temperature regulation. A corrective response can occur where the hairs 'stand on end', and trap a layer of air between the hair and the skin. This insulation of warmer air next to the skin reduces heat lost, while a thin layer of insulation would increase heat loss.\nOther corrective mechanisms are involved, such as a drop in metabolic rate and shivering when temperatures drop.
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Marsupials\n\nYou can find more details here http://www.ucmp.berkeley.edu/mammal/marsupial/marsupial.html
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Bears are thought to hibernate or sleep for 5 months to 7 months each year. In very cold climates bears may hibernate longer than in moderate climates, because the food supply in frozen climates is under snow cover longer. \n\nBears in captivity DO NOT hibernate at all because there is a ready food supply. Most bears do not eat, defecate or urinate during hibernation. This is accomplished through their metabolic systems. The bears appear to maintain the water content of their blood. The breakdown of fat reserves balance water losses. A small amount of urea is formed and is degraded and recycled into non-toxic elements. Much is yet to be known about this metabolic cycle. Grizzlies hibernate in dens. Some grizzlies utilize natural caves for dens, while others build dens in the sides of mountains, under hollow trees or other forested locations.
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Ectothermic means the animal is dependent on the outside environment for heat.\n\nHeterothermic means the animal's body temp. fluctuates as opposed to the constant temp. of a homeotherm.\n\nPoikilothermy - This refers to creatures whose internal temperatures vary, often matching the ambient temperature of the immediate environment
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There is no answer to this question.\n\nNot all  living organisms adapt under environemental stress. We can see this simply by looking at widespread organisms like leopards. Despite living everywhere from tropical deserts to rainforest to temperate alpine tundra they remain completely indistinguishable form one another. Although a desert leopard suffers from serious environmental stress in terms of water and prey availability and a mountain leopard suffers from cold and a forest leopard suffers from fungal diseases and so forth the organisms don't adapt at all. It is a generalist species and it remains a generalist with no specific adpations to environmental stress.\n\nWe can even prove experiementally that not all species dapat to environmental stress. Simply grow a perti dish fill of different species of bacteria and let it dry out. As the water stress increases most organisms will either die or become dormant. There is no evidence whatsoever of adaptation over any time scale.\n\nSimilarly not all porganisms will flee. Most will simply die, hibernate or scrape through.\n\n\nWhat a dumb question.
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Animals are a major group of organisms, classified as the kingdom Animalia or Meta­zoa. In general they are multi­cellular, capable of locomotion, responsive to their environment, and feed by consuming other organisms. Their body plan becomes fixed as they develop, usually early on in their development as embryos, although some undergo a process of metamorphosis later on.\n\nThe word "animal" comes from the Latin word animal, of which animalia is the plural, and ultimately from anima, meaning vital breath or soul.\n\nCharacteristics\nAnimals have several characteristics that set them apart from other living things. Animals are eukaryotic and multicellular, which separates them from bacteria and most protists. They are heterotrophic, generally digesting food in an internal chamber, which separates them from plants and algae. They are also distinguished from plants, algae, and fungi by lacking cell walls.\n\n\nStructure\nWith a few exceptions, most notably the sponges (Phylum Porifera), animals have bodies differen­tiated into separate tissues. These include muscles, which are able to contract and control locomotion, and a nervous system, which sends and processes signals. There is also typically an internal digestive chamber, with one or two openings. Animals with this sort of organization are called metazoans, or eumetazoans when the former is used for animals in general.\n\nAll animals have eukaryotic cells, surrounded by a characteristic extracellular matrix composed of collagen and elastic glycoproteins. This may be calcified to form structures like shells, bones, and spicules. During development it forms a relatively flexible framework upon which cells can move about and be reorganized, making complex structures possible. In contrast, other multicellular organisms like plants and fungi have cells held in place by cell walls, and so develop by progressive growth. Also, unique to animal cells are the following intercellular junctions: tight junctions, gap junctions, and desmosomes.\n\nReproduction and development\nNearly all animals undergo some form of sexual reproduction. Adults are diploid or polyploid. They have a few specialized reproductive cells, which undergo meiosis to produce smaller motile spermatozoa or larger non-motile ova. These fuse to form zygotes, which develop into new individuals.\n\nMany animals are also capable of asexual reproduction. This may take place through parthenogenesis, where fertile eggs are produced without mating, or in some cases through fragmentation.\n\nA zygote initially develops into a hollow sphere, called a blastula, which undergoes rearrangement and differentiation. In sponges, blastula larvae swim to a new location and develop into a new sponge. In most other groups, the blastula undergoes more complicated rearrangement. It first invaginates to form a gastrula with a digestive chamber, and two separate germ layers - an external ectoderm and an internal endoderm. In most cases, a mesoderm also develops between them. These germ layers then differentiate to form tissues and organs.\n\nAnimals grow by indirectly using the energy of sunlight. Plants use this energy to convert sunlight into simple sugars using a process known as photosynthesis. Starting with the molecules Carbon Dioxide (CO2) and Water (H2O), photosynthesis converts the energy of sunlight into chemical energy stored in the bonds of Glucose (C6H12O6) and releases Oxygen (O2). These sugars are then used as the building blocks which allow the plant to grow. When animals eat these plants (or eat other animals which have eaten plants), the sugars produced by the plant are used by the animal. They are either used directly to help the animal grow, or broken down, releasing stored solar energy, and giving the animal the energy required for motion. This process is known as glycolysis.\n\n\nOrigin and fossil record\nAnimals are generally considered to have evolved from flagellate protozoa. Their closest living relativ
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Hmm lets see... an amphibian is cold blooded....  (think lizards and crocodiles), so the best answer here is probably a heated chair.  Amphibian would be likely to want to sit on something warm.\n\nA heated rock chair?  THey like sitting on rocks!  lol  good luck
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The original way was to have animals live with us - body heat.  Solar and water power also work.  Lighting many many candles home made from animal fats was also used in the past.  There is also the ever popular fireplace and franklin stove burning wood (not a fossil fuel) but not coal (which is a fossil fuel).  If you are lucky to live near a hot spring - that also can be used.