Answer: Passive solar technology
Explanation:
Passive solar technology is the method of using materials to attract sunlight for warmth. Solar energy is the energy that comes from the sun. To store this energy gotten from the sun you'll need some elements to transfer this energy then store them. According to the passage the individual used a black material (black material is used for conveying and storing heat, it's one of the best form for doing so), the black material and the water helps warm the water needed for the individual after his hiking which actually worked.
Answer:
Myelin
Explanation:
Myelin is a fatty substance that surrounds nerve cell axons to insulate them and increase the rate at which information is passed along. The myelin can be compared to the protective coating of an electrical wire.
The theory of social contract brought everyone together and united the america’s , this was during world war 3
Other checks and balances include:. Executive over the judicial branch. The president appoints all federal judges. legislative branch must approve appointments that the president makes; the Senate must approve treatjes that the president makes; and the legislative branch may investigate the executive branch.
The invention of the transistor in the 1950s allowed engineers to build smaller, faster, and more reliable computers.
