Answer: B) Darkness Explanation: The More You Have the Darkness, The Less You See i.e, visible less.

Answer: C) The Civil Rights movement Explanation: The Civil Rights Movement :   The Civil Rights Movement in the United States was a struggle by black Americans to gain full citizenship rights and achieve racial equality. Individuals and organizations challenged discrimination with a variety of activities, including protest marches, boycotts, and refusal to abide by segregation laws. Many believe that the movement began with the bus boycott in Montgomery, Alabama, in 1955 and ended with the Voting Rights Act of 1965.

Te Sun. From the time rising it goes around the house upto sunset, but never touches the house.

Answer: A) A & B Explanation: A) Cooking of Food  ------ Chemical Change B) Digestion of Food ----- Chemical Change C) Freezing of water ----- Physical Change D) Water is heated up ---- Physical Change because here the chemical composition of the substance changes in A & B only.   Since we know that, If the chemical composition is changing then it is a chemical change and if the chemical composition is remaining the same, then it is a physical change.

The Earth has four major systems or spheres. These systems are  1. The geosphere,  2. The hydrosphere,  3. The atmosphere, and  4. The biosphere.   The biosphere is the system where we belong.

Answer: C) 128 bits Explanation: IPv6 - Internet Protocol Version 6. IPv6 addresses have a size of 128 bits. Internet Protocol Version 6 [IPv6] is the successor to the Internet's first addressing infrastructure, Internet Protocol version 4 (IPv4). In contrast to IPv4, which defined an IP address as a 32-bit value, IPv6 address have a size of 128 bits.

Answer: B) Isopropylcyclohexane Explanation:

Answer: D) Bacteria Explanation: The process by which bacteria convert nitrogen gas (N2) into ammonia (NH3) is called Nitrogen Fixation.   The conversion of nitrogen from one form to another in the nitrogen cycle is carried out primarily by Nitrogen Fixing Bacteria such as Azotobacter.