1. Long, stiff hair between pads of bear's feet:
- Protect bear's feet from the cold
- Provides traction on the ice
- Help the bear swim in cold, icy water
- Also helps to keep bear from slipping on the slippery ice
- Hair usually shakes free any water or ice formed after swimming
2. Hollow fur
- Traps air inside, thus making the bear buoyant in water
- The layer of air provides insulation between their warm bodies and
the cold Arctic air and water
- Insulation provided is lost when fur is covered with oil
3. Small and rounded ears
- Prevents water from entering the bear's ears and freezing their
eardrums, u see, big ears, more water!
- Helps conserve body warmth in sub-zero temperatures
4. Digging of dens several metres deep
- Shelter from winds that sweep over the ice in strong gusts,
unbroken by trees or vegetation
5. Light colour of bear's fur provides camouflage against the ice
- When hunting, bear covers black nose with its paws to hide it
6. Strong swimmers
- Polar bears can travel up to a speed of 10 kph
- Have been known to swim continuously for 100 km
- Enables them to catch prey
7. Thick layer of fat (blubber) under skin
- Up to 11 cm thick
- Insulates bear from arctic cold
- Overheating might occur
- To prevent overheating, the bear moves slowly, resting often
- Excess heat is released from the body through areas where fur is
absent or where blood vessels are close to the skin (eg. muzzle,
nose, ears, foot, pads, inner thighs, shoulders)
- Polar bear swims to cool down on warm days or after physical
activity
8. Skin under fur is black
- This is to ensure that the polar bear has a better heat retention
rate.
A 2"-5" layer of fat under the skin is their primary adaptation to the cold, as well as acting like a "wet suit" for warmth and buoyancy in water. Digestive System: Very efficient. It assimilates 97% of the fat and 84% of the protein it eats for an overall energy intake of 92% of that which is available in its diet. Females have 4 functional mammae, and produce very high-energy rich milk. They also have a thicker fat pad: its primary insulation.
echinoderms, cnidaria and other forms
An adaptive feature is a characteristic or attribute of an organism that has evolved over time to better suit the organism's environment or increase its chances of survival and reproduction. These features are a result of natural selection acting on the genetic variability within a population.
An adaptive zone is an environment which allows the development of adaptive radiation.
The primary adaptive feature of the Southern Giant Darner is it's flight speed (nearly 60 miles per hour) and it's large size (around 5 inches). It's behavior is similar to other dragonflies.
It asks questions based on a students answers to previous questions
ggshfhgfh
trunks
tanraj is a rebel
tanraj is a rebel
cake
iyo aaiaiaiyo
have tentacles are intelligent throw out ink when in danger and are mad
echinoderms, cnidaria and other forms
we are learning to set the scene by hooking and holding the reader
crack and smoke
features of an expert system are: explanation facility, easy modification, transportability, and adaptive learning ability
Two adaptive features of leaves are the presence of stomata, which allow for gas exchange, and the arrangement of veins, which helps in efficient transport of water and nutrients.