<h1><strong>UNIQUENESS OF MAN</strong></h1> CONTENT <ol> <li>Human Beings as Animals</li> <li>Man as a Primate</li> <li>Man as a Higher Animal</li> <li>The Human Brain</li> </ol> <br> <h2><strong>Human Beings as Animals (mammal)</strong></h2> Human beings are a special kind of animal. They belong to a special group of animals called mammals. As mammals, they possess the following characteristics: <ol> <li>They have high level of intelligence</li> <li>They give birth to young ones alive (viviparous)</li> <li>They possess hair or fur on every part of their body or certain part of the body</li> <li>They breast-feed their young ones with milk from the mammary glands e.g cow, sheep, cat, man</li> <li>they have four chambered hearts</li> <li>they are warm blooded animals</li> </ol> <br> <h2><strong>Man as a Primate</strong></h2> Mammals can be subdivided into many groups, one of the sub-groups is primates. Human beings belong to a sub-group of mammals called primates. Primate is a member of an order of mammals with a large brain and complex hands and feet. All primates are mammals but not all mammals are primates. Among the primates are man, gorilla, chimpanzee and monkeys. <img class="size-full wp-image-19634 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/man-as-a-primate.jpg" alt="Man as a primate" width="520" height="371" /> They have the following characteristics as primates:

<h1><strong>CHANGES IN LIVING THINGS (GROWTH AND DEVELOPMENT)</strong></h1> CONTENT <ol> <li>Definition of Growth and Development</li> <li>Growth and Developmental Changes</li> <li>Characteristic Features of Developmental Stages</li> <li>Classifying Growth and Developmental Changes (Temporary and Permanent Changes)</li> <li>Factors Affecting Growth and Development</li> </ol>   <h2><strong>Definition of Growth and Development</strong></h2> Growth is the permanent increase in size of an organism due to increase in number of cells. Growth is brought about by cell division. Development is a series of orderly changes by which a living thing comes into maturity. It is a series of changes that occur during growth. It is a gradual process leading to maturation of organs and behaviour of individual like social, emotional as well as skill acquisition.   <h2><strong>Growth and Developmental Changes</strong></h2> The noticeable changes in the body size over time is termed<strong> growth change. Growth </strong>change can be determined by measure of height and weight at time intervals while developmental changes can be observed by appearance of certain characteristics features and capabilities. Development leads to transition from one stage of life to another e.g a baby develops from infancy to childhood, then to adolescence and to adulthood. Developmental changes are progressive and move from simple to complex.   <h2><strong>Characteristic Features of Developmental Stages</strong></h2> The developmental changes are characterized by certain features which include the following:

<h1><strong>ADAPTATION OF ORGANISMS TO THEIR HABITATS</strong></h1> CONTENT <ol> <li>Meaning of Adaptation</li> <li>Characteristics of Organisms Found on Land</li> <li>Characteristics of Organisms Found in Water</li> </ol>   <h2><strong>Meaning of Adaptation</strong></h2> Adaptation means special features that help an organism to live and survive in a particular habitat. Every living thing on earth belongs to one habitat or the other because it is always interacting with some biotic and abiotic components such as energy, water, air (oxygen), food, carbon dioxide and suitable living conditions. For example, there are certain species of plants and animals that can survive only in rain forest habitat and not in the desert and vice versa. <br> <h2><strong>Characteristics of Organisms Found on Land</strong></h2> The following are the characteristics of organisms found on land: