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Circulatory System  1-Mark Questions & Answers (Short Answer/Definition) Q1: What is blood? A: Blood is a fluid connective tissue responsible for the transport of substances in the human body. Q2: What are blood vessels? A: Blood vessels are the narrow tubes or channels through which blood is transported in the body. Q3: Name the three main parts of the circulatory system in human beings. A: The three main parts of the human circulatory system are the heart, blood vessels, and blood. Q4: What is the primary function of blood in human beings? A: The primary function of blood is the transport of substances throughout the body. Q5: Briefly describe the role of the circulatory system in human beings. A: The circulatory system is responsible for the circulation of blood throughout the body. Blood, a fluid connective tissue, transports necessary substances through blood vessels (narrow tubes or channels) to and from different parts of the body.

  Mastering the Adjective in Detail: The 7 Essential Kinds of Adjectives An adjective is a word that modifies or describes a noun or a pronoun.

  Introduction  An allergy is a chronic condition where the immune system reacts abnormally to a substance, called an allergen, that is typically safe for most people.

Definition of Preposition A preposition is a word that is placed before a noun or pronoun to show its relation with another word in the sentence.