The nervous system is the part of an animal that coordinates its actions by transmitting signals to and from different parts of its body.   In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.   The nervous system has three main functions: * To collect sensory input from the body and external environment. * To process and interpret the sensory input. * To respond appropriately to the sensory input.

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: D) Cancellous bone Explanation: Spongy, porous bone tissue is also called cancellous bone.   Cancellous bone is found in bones that aren't generally under significant stress like in the shoulder blades, ribs, parts of the skull, and at the ends of long bones.

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.

The antagonist is the negative or opposing force in a story. It could be a human enemy, or it could be non-human, like an animal or something less tangible, like fear.   The antagonist plays an important role in story development.