Differentiating between centipedes and millipedes

  Though both centipede and millipedes are anthropods with segmented body and jointed legs, their form  diet and environmental roles are quite different.

1.   Centipedes have flatter bodies with segments that each bear a pair of legs.

       Millipedes have cylindrical body with each segment bearing two pairs of legs.

2.  Centipedes are carnivorous.  They hunt  insects, spiders and small cockroaches.

       Millipedes are detritivores,  feeding on decaying plant material , microbial decomposition.

3.  Centipedes are often seen indoors.  They prefer humid environments like bathrooms and pavements.

        Millipedes are often seen outdoors.  They thrive in moist habitable rich in organic matter.

4.  When threatened, centipedes may bite.  Though their venom is not lethal to humans, it feel like bee sting.

       When threatened, lacking venom, millipedes  roll into tight coils.

Why do humans have eyebrows ??

 Humans have eyebrows for  ===

1.  Protecting our vision from physical irritants 

2.  As a tool for social communication 

The arched shape and outward direction of eyebrow hair keeps sweat and rain away from eyes. 

They help catch dust and dirt before it can fall into eyes.

They help to reduce the glare from bright light.

Eyebrows are critical to identify people.

Eyebrows allow us to signal complex emotions such as skepticism, sympathy and surprise.

Why atta dough turn black in refrigerator during summer ??

  It is very common practice to knead dough in advance to save time and energy.

This extra dough is generally stored in refrigerator. Over time, it turns black or grey.

It happens in summer.  WHY   ??

The primary reason behind this discoloration is  oxidation.

When we knead the wheat flour with water, it is exposed to air and oxygen reacts with compounds in flour, leading to darker colour.

The enzymes present in wheat flour, remain active even in cooler temperature of refrigerator. They continue to react over time.

Fermentation is also a reason for discoloration.. 

During summer,  dough begin to ferment even though it is refrigerated  !!!

It causes a mild sour smell along with darker appearance.  

SO HOW TO STORE  ???

Always apply a thin layer of oil over the dough.

Refrigerating in small portions immediately after kneading is a smart trick to avoid spoilage.

Which is the largest bridge in the world ??

 The Danyong - Kunshan grand bridge in China is the largest bridge in the world.

It is 164.8 km long.

The bridge was made to connect cities.

It goes over fields, rivers, lakes and small towns.

It is built to survive storms, floods and even earthquakes !!!

It is part of a train line.

Why lizards are afraid of peacock feathers ??

  It is often advised to place peacock feathers to get rid of lizards in the house.

But why lizards flee by seeing peacock feathers  ??

The crucial element behind the aversion shown by the lizards is the existence of eye spots o peacock feathers   !!!

The spots take the form of a larger animal and provide the visual illusion that the nearby predator is peering at the lizard.

Since the lizards belong to reptilian category and take the visual cues from the spots on peacock feathers for granted as a threat.

That's why they flee upon spotting the feathers  !!!

This fleeing behaviour is a form of survival strategy......