π₯3
βOne person with a belief is equal to a force of ninety-nine who have only interests.β
@worldof_knowledge
@worldof_knowledge
π1π1
All mammals without any exception, are characterised by
Anonymous Poll
23%
Viviparity and biconcave red blood cells
18%
Extra- abdominal testes and a four chambered heart
12%
Heterodant teeth and 12 pairs of cranial nerves
47%
A muscular diaphragm and milk producing glands.
π€3
Vivipary is shown by all mammals except monotremes (Platypus and echidna)
All mammals do not have Biconcave RBCs, example Camel has ovaloid RBCs.
Elephants do not have extra abdominal testes and four-chambered hearts are not exclusive to Mammals.
Heterodont teeth and 12 cranial nerves are both not exclusive to mammals as they can be found in other animal groups too.
Muscular diaphragm and mammary glands are the only characteristics having no exceptions and are exclusive to mammals.
@worldof_knowledge π
All mammals do not have Biconcave RBCs, example Camel has ovaloid RBCs.
Elephants do not have extra abdominal testes and four-chambered hearts are not exclusive to Mammals.
Heterodont teeth and 12 cranial nerves are both not exclusive to mammals as they can be found in other animal groups too.
Muscular diaphragm and mammary glands are the only characteristics having no exceptions and are exclusive to mammals.
@worldof_knowledge π
β€4
In summer, an average tit eats 300-400 caterpillars a day, which means that it eats the same amount of food per day as it weighs, and this is because they need a tremendous amount of energy to fly, so they eat like crazy.
@worldof_knowledge β¨
@worldof_knowledge β¨
π€―4β€3π₯°1
This media is not supported in your browser
VIEW IN TELEGRAM
@worldof_knowledge π³
π±7π₯1π1π€―1
This media is not supported in your browser
VIEW IN TELEGRAM
π7π€©2π₯1
This media is not supported in your browser
VIEW IN TELEGRAM
Separation of liquids with different densities....β‘οΈ
@worldof_knowledge
Credit: Instagram(sci.videos)β¨
@worldof_knowledge
Credit: Instagram(sci.videos)β¨
β€7π4π3π₯1π±1
Why π±πΌ πΌππΏ ππ²πΆπ»π πΉπΌπΌπΈ π―πΉππ² ππ΅π²π» πΌππΏ π―πΉπΌπΌπ± πΆπ πΏπ²d?
Light from veins must penetrate through layers of skin and fat before it reaches the eyes of the observer. Since red and blue colors are of two different wavelengths, they penetrate the skin with different degrees of success. As a result of this, bluish-green light is reflected off the blood and reaches the observerβs eyes, making our veins appear blue.
Light from veins must penetrate through layers of skin and fat before it reaches the eyes of the observer. Since red and blue colors are of two different wavelengths, they penetrate the skin with different degrees of success. As a result of this, bluish-green light is reflected off the blood and reaches the observerβs eyes, making our veins appear blue.
π4
π8β€2π1