Answer: A) The price of personal computers declined last year. Explanation:

Answer: B) Charcoal Explanation: It is Charcoal which is black when we buy it or when not being used. It gets red in appearance when put in use means to say when burning. And eventually when it's been consumed by fire or after getting burned out or used up, changes into ashes which look grey in color.

Answer: D) Lithium Explanation: Electronegativity is the tendency for an atom to attract electrons. There are general trends on the periodic table which you can use to determine the relative electronegativity for different elements, but otherwise you can also look at their valence shell and effective nuclear charge to determine their relative electronegativity.   Here from the given options, Lithium has least tendency to attract electrons and thus has a lower electronegativity.

Answer: C) Nitrogen Explanation: Our atmosphere is made up of 78% Nitrogen, 21% Oxygen and 1% all other gases like argon, carbon dioxide, neon, and helium.   So, Nitrogen makes up the majority of our atmosphere.

Answer: A) with States Explanation: Government can be classified in three manners: (1) who participates, (2) geographic distribution of power, and (3) legislative/executive relationship.   Who can participate is generally broken down into two forms of government, democracy or dictatorship   While the legislative/executive relationship is broken down into presidential or parliamentary   The geographic distribution of power is broken down into unitary, federal, and confederation (confederal). Confederal System of Government :: A system of government where power is located with the independent states and there is little power in the central government.   Today, no nation follows a confederal system. Organizations, like the European Union and the Commonwealth of Independent States, are based on the ideas of a confederal system. Several nations make up these organizations, but they still retain the majority of their independence.

Answer: B) Specific heat Explanation: The usual cause of sea breeze is the difference in specific heat capacity between land and water Land heats and cools more quickly than water.   What is the cause of a sea breeze? The air over the land is warmed and rises, to a greater temperature than that over the sea. This produces a convection current, with cooler air flowing in from over the sea to replace that rising from the land. At night the land cools more than the sea, so the action reverses to produce a land-breeze, blowing off the land.

Answer: D) Perimeter Explanation: The distance around a shape or figure I called Perimeter. A perimeter is a path that surrounds a two-dimensional shape.

Answer: D) Glucose Explanation: Glucose is the major monosaccharide found in the body. It is absorbed directly into the bloodstream duringdigestion and a vital carbohydrate as it is a source of energy.