Question

Animals living in cold regions have?
A. Legs to run fast
B. Fast for additional insulation
C. Long necks
D. Long eyelashes

Answer 1

We all know that the animals and plants having in different environments developed different features according to their environment, this is known as adaptation. The animals adapt itself to live according to the specific place and specific way. The adaptation happens according to the animal's physical structure like size and shape of body.

Complete Answer:
- In colder climates animals or rather mammals need features which would help them retain their body heat. They either have body hair or shorter ears so that their body heat does not get separated; they have a listed surface area to volume ratio so that their body heat can be conserved.
- Allen’s rule was formulated by Joseph Allen who said that mammals from colder climates have shorter ears and shorter Limbs so that they do not lose their heat.
- The biological process in which species tries to fit itself in the given environment and continue for further generation is termed as adaptation. There are certain challenges which are faced by animals while adapting themselves in the new environment.
- Few animals which do not adapt eventually die and raised start matting and produce babies which result in the increase of their species .important things required for an animal to adapt in the environment and the place, climatic conditions as these things influence the creature living in the place climatic conditions the availability of food also plays an important role in the adaptation.
- Animals that live in colder areas have to protect their bodies against extremely cold environmental conditions. Their bodies cannot withstand such cold climates. So, they have thick white fur on their body. This provides an additional layer over their skin. As a result, the air gets trapped in this layer and it cannot pass through it keeping their body insulated against the excessive cold.

Thus, the answer is option B: fat for additional insulation.

Note: A Melanistic dark phenotype of peppered moth, has increased in its number in Britain.this helped the moth to be escaped from predation by Birds. The gene frequency is the initial phase of adaptation. Adaptation of plants to survive in the different areas is extremely important. Once the plants get adapted to an environment and they tend to grow in that place and not move.