Animals that never touch water ....

  Water is the basic necessity of sustaining life.  However some animals are strangely evolved to live entirely without drinking it  !!!

I have listed down some animals who don't drink water but manage to keep them hydrated.  I have given the source for survive 

Here are some of such animals   -------

1.  Kangaroo rats

          Source  :  Dry seeds and a nocturnal lifestyle 

2.  Fennec and Sand fox

           Source  :   Seek moisture from food

3.  Koalas  

            Source  :  Depend on Eucalyptus leaves for hydration 

4.  Harvester ants

        .   Source :   Depend on food and nest

5.   Thorny devil lizard 

             Source  :   Depend on dew and rain falling on skin 

Why in Martian sky, Sun appears shrunken compared to Earth ??

 Answer is simple !!!

Mars is farther from the Sun than Earth is ......

Its just perspective and distance   !!!

On Mars,

            Sun didn't shrink.....

            We just moved farther away from it   !!!!!

What does the Martian sky look like ??

                  

Sun      :    A smaller,  brighter disc.

                  Still very bright. But not as " big " as our Sun  !!!

Sky colour      :    Not blue !!!

                              Mars' atmosphere is super thin.

                              Only 1% as  dense as Eatth.

                              With less air to scatter blue light, sky looks butterscotch during the day !!!

                             Bluish near the sun set.

Light      :     Only 43% of sunlight reaches Mars vs Earth.

                       So it is noticeably dimmer, like a cloudy day on Earth   !!!

Why rice turns mushy ???

  Rice gets mushy because of starch  +   too much water  +  too much heat 

Here is what happens    ------

1.  Rice has starch inside 

2.  When we cook rice ,  rice soaks water and starch swells up.

3.  If we add too much water OR cook too long , the rice grains burst open.

4.  Now the starch comes out and makes everything sticky and soft meaning rice gets mushy  !!!

Basmati rice won't get mushy because it has less sticky starch !!!

Normal short rice gets mushy faster because it has more sticky starch  !!!

Which is the mamaal having densest fur ??

 This question was asked on Koun Banega Karodpati program.

Question 

Which creature has the densest fur of any mammal ??

1.  Grizzly Bear

2.  North American beaver 

3.  Polar bear

4.  Sea otters

Answer 

Sea utter has the densest fur of any mammal.  About 1,50,000 per sq cm.

Why so dense  ??

Unlike whales or seals, sea otters don't have BLUBBERS. 

They live in freezing Pacific water. This ultra dense fur traps air.

 Hence water never touches their skin.

It is their only way to stay warm  !!!

They have to groom for everyday to keep that air trapped.  If their fur gets dirty, they die of extreme cold  !!!

Wht can't we see ultraviolet light ???

 We can't see ultraviolet ( UV ) light because lens of human eye acts as a physical filter that absorbs it before the light reaches retina.

The cells in retina can detect the light of wavelength about 400  -  700 nm but UV light is just 10  - 400 nm.

So our eye cells just don't react to this light    !!!!

Lens of our eye absorbs UV light so that it can protect delicate retina from damage.

Some people who have got their eye lens removed in cataract surgery, can perceive UV light !!!

Bees, birds and some reptiles can detect UV light.