Insulation isa property of objects that inhibits heat transfer and its counter property is conduction.
As much hot air is pressured into the room space by a condiitioner, the heat accumulates. The objects we have at home like cloth, wood and other objects inhibits or gradually slows the heat to escape and going onto the cold areas outside. This prevents the room temperature from shrinking from its desired state.
Answer:
c. Feathers were used as part of a social display
Explanation:
There are many speculations about the origin of feathers, some researchers believe that they emerged as a specific function, others defend the idea of the emergence of feathers from a social display.
The social display may have been one of the factors for the origin of the feathers, since in addition to the conquest of the female, animals thus selected would gain more conducive conditions for survival, such as better regulation of body temperature. But social display alone could not have forced the emergence of more complex feathers, since in many cases sexual characters usually occur only in males and not in females, or less apparent in females.
The appearance of penaceous appendages in theropods may be linked to the evolution of a high metabolic rate, which provides an improvement in locomotor skills as well as distinct behavior and visual communication. The development of penaceous appendages may also have played an important role in regards competition and radiation success of maniraptor theropods and their descendants of active flight in the Jurassic. Therefore, the theory is believed that external factors (natural selection) along with social display could have propitiated the origin of feathers.
Answer:
The cladogram is correct. The further explanation is given below.
Explanation:
- As with most other species excluding lamprey, paired arms and legs are established.
- In any organism except lamprey as well as tuna, paired legs become available.
- Throughout all animals, except lampreys, tuna, certain bullfrogs, the amniotic membrane seems to be preserved.
- In kangaroos, rhesus monkeys including people, mammary glands were only ever available.
- The placenta has only been found throughout rhesus monkeys and also in humans.
- Foramen magnum forward will be exclusively found in humans.
Answer:
Elastic Fibre
Explanation:
Due to its ability to stretch and return to it's Normal size. It is one of the three main types
