Explanation

• the sun appears red at sunrise and sunset while it appears white at noon because Of the Scattering of light due to dust particles and air molecules.
• ***

concept:

• It is due to the scattering of light.
• At noon, the sun is at the nearest point to earth.
• Hence all the colors get scattered almost equally and this you see white light. 
• But during sunrise and sunset, the sun is at the longest position.
• Here blue light gets scattered off and due to the larger wavelength of red light, it can travel a longer distance and hence reach our eyes.
• This we see the sun's red

Explanation

• Renin is found in the stomach
• ***
• Rennin is a milk-curdling enzyme, that occurs in the gastric juices of infants 
  
• rennin, also called chymosin, is a protein-digesting enzyme
• it is found only in the fourth stomach of cud-chewing animals, such as cows, calves, and other ruminants.
  

Explanation

Silicon is not the conductor

***
Aluminum and gold are metals so they are good conductors of electricity.

Now graphite is an allotropic form of carbon and is the only nonmetal that can conduct electricity.

Silicon is a semiconductor. 

**********

VU LDC UDC FIA PAPER 27-12-2021

Explanation

• the movement of air over the surface of the earth is called: wind
• **
• The wind is the horizontal movement of air across the Earth's surface
  
  

Explanation

•  crystal is an example of instructive igneous rock
• ***
• instructive rock is also known as plutonic rock.

Explanation

Renal Tubules: contains four segments: the pars recta (the straight descending limb of proximal tubule), the thin descending limb, the thin ascending limb, and the thick ascending limb.

Explanation

Explanation

• the book provides information on all branches of knowledge and is called an encyclopedia
• **
• An encyclopedia treats a particular branch of knowledge in a comprehensive manner.
• An encyclopedia is a book or set of books 
  

Explanation

Milk producers of all sizes make effective use of cottonseed (WCS), especially in the feed of cattle in the early stages of lactation. WCS can increase milk yield and butter fat. As a result, many producers nourish their herds based on the valuable nutrients found in cotton seeds.

Explanation

• the variety of people from one another in terms of color race religion language and region is called diversity
• ***
• Diversity means having a range of people with various racial, ethnic, socioeconomic, and cultural backgrounds and various lifestyles, experiences, and interests.